List of IBM PS/2 models explained

The Personal System/2 or PS/2 was a line of personal computers developed by International Business Machines Corporation (IBM). Released in 1987, the PS/2 represented IBM's second generation of personal computer following the original IBM PC series, which was retired following IBM's announcement of the PS/2 in April 1987. Most PS/2s featured the Micro Channel architecture bus—a closed standard which was IBM's attempt at recapturing control of the PC market. However some PS/2 models at the low end featured ISA buses, which IBM included with their earlier PCs and which were widely cloned due to being a mostly-open standard. Many models of PS/2 were made, which came in the form of desktops, towers, portables, laptops and notebooks.

Notes

Legend

Explanatory notes

• Built-in or optional monitors are CRTs unless mentioned otherwise.
• The Space Saving Keyboard is a 87-key numpad-less version of the Model M.
• The 25 Collegiate, intended for college students, had two 720 KB floppy drives, maxed out the RAM to 640 KB, and came packaged with the official PS/2 Mouse, Windows 2.0, and four blank floppy disks.^[1]
• Financial workstations came packaged with a 50-key function keypad and were intended for use in banks.^[2]
• LS models are "LAN Stations": essentially the same as their non-LS counterparts but without floppy drives or hard drives and that connect to networks using Ethernet or Token Ring adapters (in essence, diskless workstations).^[3]
• Ultimedia models shipped with a microphone and included SCSI CD-ROMs, M-Audio sound adapter cards and volume controls and headphone and microphone jacks at the front of the case.
• Array models are PS/2 Servers with support for RAID.^[4]

Models

Main line

+ IBM PS/2 models	Model	IBM	Processor	Clock speed	Bus		No. of drive bays			Stock	Maximum	Video adapter	Monitor	Form factor	Date introduced	Notes
25	8525-001	Intel 8086	8 (0)	ISA, 8-bit	2	2	one 720 KB	none	512 KB	640 KB	MCGA	12-in. monochrome	All-in-one		Space Saving Keyboard	^[5]
25	8525-004	Intel 8086	8 (0)	ISA, 8-bit	2	2	one 720 KB	none	512 KB	640 KB	MCGA	12-in. color	All-in-one		Space Saving Keyboard
25	8525-G01	Intel 8086	8 (0)	ISA, 8-bit	2	2	one 720 KB	none	512 KB	640 KB	MCGA	12-in. monochrome	All-in-one			^[6]
25	8525-G04	Intel 8086	8 (0)	ISA, 8-bit	2	2	one 720 KB	none	512 KB	640 KB	MCGA	12-in. color	All-in-one
25 Collegiate	8525-C02	Intel 8086	8 (0)	ISA, 8-bit	2	2	two 720 KB	none	640 KB	640 KB	MCGA	12-in. monochrome	All-in-one		Space Saving Keyboard	^[7]
25 Collegiate	8525-C05	Intel 8086	8 (0)	ISA, 8-bit	2	2	two 720 KB	none	640 KB	640 KB	MCGA	12-in. color	All-in-one		Space Saving Keyboard
25 Collegiate	8525-K02	Intel 8086	8 (0)	ISA, 8-bit	2	2	two 720 KB	none	640 KB	640 KB	MCGA	12-in. monochrome	All-in-one
25 Collegiate	8525-K05	Intel 8086	8 (0)	ISA, 8-bit	2	2	two 720 KB	none	640 KB	640 KB	MCGA	12-in. color	All-in-one
25 LS	8525-L01	Intel 8086	8 (0)	ISA, 8-bit	2	2	one 720 KB	none	512 KB	640 KB	MCGA	12-in. monochrome	All-in-one		Token Ring
25 LS	8525-L04	Intel 8086	8 (0)	ISA, 8-bit	2	2	one 720 KB	none	512 KB	640 KB	MCGA	12-in. color	All-in-one		Token Ring
25 286	8525-006	Intel 80286	10 (1)	ISA, 16-bit	2	2	one 1.44 MB	none	1 MB	4 MB	VGA	12-in. color	All-in-one		Space Saving Keyboard	^[8]
25 286	8525-036	Intel 80286	10 (1)	ISA, 16-bit	2	2	one 1.44 MB	30 MB	1 MB	4 MB	VGA	12-in. color	All-in-one
25 286	8525-G06	Intel 80286	10 (1)	ISA, 16-bit	2	2	one 1.44 MB	none	1 MB	4 MB	VGA	12-in. color	All-in-one		Space Saving Keyboard
25 286	8525-G36	Intel 80286	10 (1)	ISA, 16-bit	2	2	one 1.44 MB	30 MB	1 MB	4 MB	VGA	12-in. color	All-in-one
25 SX	8525-K00	Intel 386SX	20	ISA, 16-bit	3	2	one 1.44 MB	none	1 MB	16 MB	VGA	12-in. color	All-in-one			^[9] ^[10]
25 SX	8525-K01	Intel 386SX	20	ISA, 16-bit	3	2	one 1.44 MB	none	1 MB	16 MB	VGA	12-in. color	All-in-one		Ethernet
25 SX	8525-L02	Intel 386SX	20	ISA, 16-bit	3	2	one 1.44 MB	none	1 MB	16 MB	VGA	12-in. color	All-in-one		Token Ring
30	8530-001	Intel 8086	8 (0)	ISA, 8-bit	3	2	one 720 KB	none	640 KB	640 KB	MCGA	optional	Desktop		Replaces the 8530-002	^[11] ^[12]
30	8530-002	Intel 8086	8 (0)	ISA, 8-bit	3	2	two 720 KB	none	640 KB	640 KB	MCGA	optional	Desktop			^[13]
30	8530-021	Intel 8086	8 (0)	ISA, 8-bit	3	2	one 720 KB	20 MB	640 KB	640 KB	MCGA	optional	Desktop
30	8530-R02	Intel 8086	8 (0)	ISA, 8-bit	3	2	two 720 KB	none	640 KB	640 KB	MCGA	optional	Desktop		Financial workstation	^[14] ^[15]
30	8530-R21	Intel 8086	8 (0)	ISA, 8-bit	3	2	one 720 KB	20 MB	640 KB	640 KB	MCGA	optional	Desktop		Financial workstation
30 286	8530-E01	Intel 80286	10 (1)	ISA, 16-bit	3	2	one 1.44 MB	none	512 KB	4 MB	VGA	optional	Desktop			^[16]
30 286	8530-E21	Intel 80286	10 (1)	ISA, 16-bit	3	2	one 1.44 MB	20 MB	512 KB	4 MB	VGA	optional	Desktop
30 286	8530-E31	Intel 80286	10 (1)	ISA, 16-bit	3	2	one 1.44 MB	30 MB	512 KB	4 MB	VGA	optional	Desktop			^[17]
30 286	8530-E41	Intel 80286	10 (1)	ISA, 16-bit	3	2	one 1.44 MB	40 MB	512 KB	4 MB	VGA	optional	Desktop			^[18]
35 SX	8535-040	Intel 386SX	20 (0–2)	ISA, 16-bit	3	2	one 1.44 MB	none	2 MB	4 MB	VGA	optional	Desktop
35 SX	8535-043	Intel 386SX	20 (0–2)	ISA, 16-bit	3	2	one 1.44 MB	40 MB	2 MB	4 MB	VGA	optional	Desktop
35 SX	8535-045	Intel 386SX	20 (0–2)	ISA, 16-bit	3	2	one 1.44 MB	80 MB	2 MB	4 MB	VGA	optional	Desktop			^[19]
35 LS	8535-14X	Intel 386SX	20	ISA, 16-bit	3	2	none	none	2 MB	4 MB	VGA	optional	Desktop		Ethernet	^[20]
35 LS	8535-24X	Intel 386SX	20	ISA, 16-bit	3	2	none	none	2 MB	4 MB	VGA	optional	Desktop		Token Ring
35 SLC	8535-050	IBM 386SLC	20 (0)	ISA, 16-bit	3	2	one 2.88 MB	none	2 MB	16 MB	VGA	optional	Desktop			^[21]
35 SLC	8535-053	IBM 386SLC	20 (0)	ISA, 16-bit	3	2	one 1.44 MB	80 MB	2 MB	16 MB	VGA	optional	Desktop
35 SLC	8535-055	IBM 386SLC	20 (0)	ISA, 16-bit	3	2	one 2.88 MB	80 MB	2 MB	16 MB	VGA	optional	Desktop			^[22]
40 SX	8540-040	Intel 386SX	20 (0–2)	ISA, 16-bit	5	4	one 1.44 MB	none	2 MB	16 MB	VGA	optional	Desktop			^[23]
40 SX	8540-043	Intel 386SX	20 (0–2)	ISA, 16-bit	5	4	one 1.44 MB	40 MB	2 MB	16 MB	VGA	optional	Desktop
40 SX	8540-045	Intel 386SX	20 (0–2)	ISA, 16-bit	5	4	one 1.44 MB	80 MB	2 MB	16 MB	VGA	optional	Desktop
40 SLC	8540-050	IBM 386SLC	20 (0)	ISA, 16-bit	5	4	one 1.44 MB	none	2 MB	16 MB	VGA	optional	Desktop			^[24]
40 SLC	8540-055	IBM 386SLC	20 (0)	ISA, 16-bit	5	4	one 1.44 MB	80 MB	2 MB	16 MB	VGA	optional	Desktop
50	8550-021	Intel 80286	10 (1)	MCA, 16-bit	4	3	one 1.44 MB	20 MB	1 MB	1 MB	VGA	optional	Desktop			^[25] ^[26]
50 Z	8550-031	Intel 80286	10 (0)	MCA, 16-bit	4	3	one 1.44 MB	30 MB	1 MB	2 MB	VGA	optional	Desktop			^[27]
50 Z	8550-061	Intel 80286	10 (0)	MCA, 16-bit	4	3	one 1.44 MB	60 MB	1 MB	2 MB	VGA	optional	Desktop
55 SX	8555-031	Intel 386SX	16 (0–2)	MCA, 16-bit	3	2	one 1.44 MB	30 MB	2 MB	8 MB	VGA	optional	Desktop
55 SX	8555-041	Intel 386SX	16 (0–2)	MCA, 16-bit	3	2	one 1.44 MB	40 MB	2 MB	8 MB	VGA	optional	Desktop			^[28]
55 SX	8555-061	Intel 386SX	16 (0–2)	MCA, 16-bit	3	2	one 1.44 MB	60 MB	2 MB	8 MB	VGA	optional	Desktop
55 SX	8555-081	Intel 386SX	16 (0–2)	MCA, 16-bit	3	2	one 1.44 MB	80 MB	2 MB	8 MB	VGA	optional	Desktop
55 LS	8555-LE0	Intel 386SX	16 (0–2)	MCA, 16-bit	3	2	none	none	2 MB	8 MB	VGA	optional	Desktop			^[29] ^[30]
55 LS	8555-LT0	Intel 386SX	16 (0–2)	MCA, 16-bit	3	2	none	none	2 MB	8 MB	VGA	optional	Desktop
56 SX	8556-043	Intel 386SX	20	MCA, 16-bit	3	2	one 2.88 MB	40 MB	4 MB	8 MB	VGA	optional	Desktop
56 SX	8556-045	Intel 386SX	20	MCA, 16-bit	3	3	one 2.88 MB	80 MB	4 MB	8 MB	VGA	optional	Desktop
56 SX	8556-049	Intel 386SX	20	MCA, 16-bit	3	3	one 2.88 MB	160 MB	4 MB	8 MB	VGA	optional	Desktop
56 LS	8556-14X	Intel 386SX	20	MCA, 16-bit	3	3	none	none	4 MB	8 MB	VGA	optional	Desktop		Ethernet	^[31] ^[32]
56 LS	8556-24X	Intel 386SX	20	MCA, 16-bit	3	3	none	none	4 MB	8 MB	VGA	optional	Desktop		Token Ring	^[33]
56 SLC	8556-053	IBM 386SLC	20	MCA, 16-bit	3	2	one 2.88 MB	40 MB	4 MB	16 MB	VGA	optional	Desktop			^[34]
56 SLC	8556-055	IBM 386SLC	20	MCA, 16-bit	3	2	one 2.88 MB	80 MB	4 MB	16 MB	VGA	optional	Desktop			^[35]
56 SLC	8556-059	IBM 386SLC	20	MCA, 16-bit	3	2	one 2.88 MB	160 MB	4 MB	16 MB	VGA	optional	Desktop
56 SLC LS	8556-25X	IBM 386SLC	20	MCA, 16-bit	3	2	none	none	4 MB	16 MB	VGA	optional	Desktop		Token Ring
56 SLC LS	8556-15X	IBM 386SLC	20	MCA, 16-bit	3	2	none	none	4 MB	16 MB	VGA	optional	Desktop		Ethernet
57 SX	8557-045	Intel 386SX	20	MCA, 16-bit	5	4	one 2.88 MB	80 MB	4 MB	16 MB	VGA	optional	Desktop			^[36]
57 SX	8557-049	Intel 386SX	20	MCA, 16-bit	5	4	one 2.88 MB	160 MB	4 MB	16 MB	VGA	optional	Desktop
57 SLC	8557-055	IBM 386SLC	20	MCA, 16-bit	5	4	one 2.88 MB	80 MB	4 MB	16 MB	VGA	optional	Desktop		Token Ring	^[37]
57 SLC	8557-059	IBM 386SLC	20	MCA, 16-bit	5	4	one 2.88 MB	160 MB	8 MB	16 MB	VGA	optional	Desktop
57 SLC	8557-05F	IBM 386SLC	20	MCA, 16-bit	5	4	one 2.88 MB	400 MB	8 MB	16 MB	VGA	optional	Desktop
Ultimedia M57 SLC	8557-255	IBM 386SLC	20	MCA, 16-bit	5	4	one 2.88 MB	80 MB	4 MB	16 MB	VGA	optional	Desktop			^[38]
Ultimedia M57 SLC	8557-259	IBM 386SLC	20	MCA, 16-bit	5	4	one 2.88 MB	160 MB	4 MB	16 MB	VGA	optional	Desktop
60	8560-041	Intel 80286	10 (1)	MCA, 16-bit	8	4	one 1.44 MB	44 MB	1 MB	7 MB	VGA	optional	Tower			^[39]
60	8560-071	Intel 80286	10 (1)	MCA, 16-bit	8	4	one 1.44 MB	70 MB	1 MB	7 MB	VGA	optional	Tower
65 SX	8565-061	Intel 386SX	16	MCA, 16-bit	8	4	one 1.44 MB	60 MB	2 MB	8 MB	VGA	optional	Tower			^[40]
65 SX	8565-121	Intel 386SX	16	MCA, 16-bit	8	4	one 1.44 MB	120 MB	2 MB	8 MB	VGA	optional	Tower
65 SX	8565-321	Intel 386SX	16	MCA, 16-bit	8	4	one 1.44 MB	320 MB	2 MB	8 MB	VGA	optional	Tower			^[41]
70 386	8570-061	Intel 386	20	MCA, 32-bit	3	3	one 1.44 MB	60 MB	2 MB	6 MB	VGA	optional	Desktop
70 386	8570-081	Intel 386	20	MCA, 32-bit	3	3	one 1.44 MB	60 MB	4 MB	6 MB	VGA	optional	Desktop
70 386	8570-121	Intel 386	20	MCA, 32-bit	3	3	one 1.44 MB	120 MB	2 MB	6 MB	VGA	optional	Desktop
70 386	8570-161	Intel 386	20	MCA, 32-bit	3	3	one 1.44 MB	160 MB	4 MB	6 MB	VGA	optional	Desktop
70 386	8570-A16	Intel 386	25	MCA, 32-bit	3	3	one 1.44 MB	160 MB	4 MB	6 MB	VGA	optional	Desktop
70 386	8570-A21	Intel 386	25	MCA, 32-bit	3	3	one 1.44 MB	120 MB	2 MB	6 MB	VGA	optional	Desktop			^[42] ^[43] ^[44] ^[45]
70 386	8570-A61	Intel 386	25	MCA, 32-bit	3	3	one 1.44 MB	60 MB	2 MB	6 MB	VGA	optional	Desktop
70 386	8570-A81	Intel 386	25	MCA, 32-bit	3	3	one 1.44 MB	80 MB	4 MB	6 MB	VGA	optional	Desktop
70 386	8570-E61	Intel 386	16	MCA, 32-bit	3	3	one 1.44 MB	60 MB	1 MB	6 MB	VGA	optional	Desktop
70 486	8570-B21	Intel 486	25	MCA, 32-bit	3	3	one 1.44 MB	120 MB	2 MB	8 MB	VGA	optional	Desktop			^[46] ^[47]
70 486	8570-B61	Intel 486	25	MCA, 32-bit	3	3	one 1.44 MB	60 MB	2 MB	8 MB	VGA	optional	Desktop
80	8580-041	Intel 386	16	MCA, 32-bit	8	5/6	one 1.44 MB	44 MB	1 MB	2 MB	VGA	optional	Tower			^[48] ^[49] ^[50] ^[51]
80	8580-071	Intel 386	16	MCA, 32-bit	8	5/6	one 1.44 MB	70 MB	1 MB	2 MB	VGA	optional	Tower
80	8580-081	Intel 386	20	MCA, 32-bit	8	5/6	one 1.44 MB	80 MB	2 MB	4 MB	VGA	optional	Tower			^[52]
80	8580-111	Intel 386	20	MCA, 32-bit	8	5/6	one 1.44 MB	115 MB	2 MB	4 MB	VGA	optional	Tower			^[53]
80	8580-121	Intel 386	20	MCA, 32-bit	8	5/6	one 1.44 MB	120 MB	2 MB	4 MB	VGA	optional	Tower			^[54]
80	8580-161	Intel 386	20	MCA, 32-bit	8	5/6	one 1.44 MB	160 MB	2 MB	4 MB	VGA	optional	Tower
80	8580-311	Intel 386	20	MCA, 32-bit	8	5/6	one 1.44 MB	314 MB	2 MB	4 MB	VGA	optional	Tower			^[55] ^[56]
80	8580-321	Intel 386	20	MCA, 32-bit	8	5/6	one 1.44 MB	320 MB	2 MB	4 MB	VGA	optional	Tower
80	8580-A16	Intel 386	25	MCA, 32-bit	8	5/6	one 1.44 MB	160 MB	4 MB	8 MB	VGA	optional	Tower
80	8580-A21	Intel 386	25	MCA, 32-bit	8	5/6	one 1.44 MB	120 MB	4 MB	8 MB	VGA	optional	Tower
80	8580-A31	Intel 386	25	MCA, 32-bit	8	5/6	one 1.44 MB	320 MB	4 MB	8 MB	VGA	optional	Tower
53 SLC2	9553-0B7	IBM 486SLC2	50	MCA, 16-bit	3	3	one 1.44 MB	120 MB	4 MB	16 MB	SVGA	optional	Desktop		Reply board
53 SLC2	9553-0BB	IBM 486SLC2	50	MCA, 16-bit	3	3	one 1.44 MB	250 MB	4 MB	16 MB	SVGA	optional	Desktop		Reply board
53 LS	9553-1BX	IBM 486SLC2	50	MCA, 16-bit	3	3	none	none	4 MB	16 MB	SVGA	optional	Desktop		Reply board, Ethernet	^[57]
53 LS	9553-2BX	IBM 486SLC2	50	MCA, 16-bit	3	3	none	none	4 MB	16 MB	SVGA	optional	Desktop		Reply board, Token Ring
56 486SLC2	9556-0B6	IBM 486SLC2	50	MCA, 16-bit	3	2	one 2.88 MB	104 MB	8 MB	16 MB	XGA-2	optional	Desktop			^[58]
56 486SLC2	9556-0BA	IBM 486SLC2	50	MCA, 16-bit	3	2	one 2.88 MB	212 MB	8 MB	16 MB	XGA-2	optional	Desktop
56 486SLC2	9556-1BX	IBM 486SLC2	50	MCA, 16-bit	3	2	one 2.88 MB	none	4 MB	16 MB	XGA-2	optional	Desktop		Ethernet
56 486SLC2	9556-2BX	IBM 486SLC2	50	MCA, 16-bit	3	2	one 2.88 MB	none	4 MB	16 MB	XGA-2	optional	Desktop		Token Ring
56 486SLC2	9556-ABX	IBM 486SLC2	50	MCA, 16-bit	3	2	one 2.88 MB	none	4 MB	16 MB	XGA-2	optional	Desktop
56 486SLC2	9556-DB6	IBM 486SLC2	50	MCA, 16-bit	3	2	one 2.88 MB	104 MB	8 MB	16 MB	XGA-2	optional	Desktop			^[59]
56 486SLC2	9556-DBA	IBM 486SLC2	50	MCA, 16-bit	3	2	one 2.88 MB	212 MB	8 MB	16 MB	XGA-2	optional	Desktop
56 486SLC2	9556-KB6	IBM 486SLC2	50	MCA, 16-bit	3	2	one 2.88 MB	104 MB	8 MB	16 MB	XGA-2	optional	Desktop			^[60]
56 486SLC2	9556-KBA	IBM 486SLC2	50	MCA, 16-bit	3	2	one 2.88 MB	212 MB	8 MB	16 MB	XGA-2	optional	Desktop
56 486SLC2	9556-QB6	IBM 486SLC2	50	MCA, 16-bit	3	2	one 2.88 MB	104 MB	8 MB	16 MB	XGA-2	optional	Desktop
56 486SLC2	9556-QBA	IBM 486SLC2	50	MCA, 16-bit	3	2	one 2.88 MB	212 MB	8 MB	16 MB	XGA-2	optional	Desktop
56 486SLC3	9556-DE9	IBM 486SLC3	75	MCA, 16-bit	3	3	one 2.88 MB	170 MB	8 MB	16 MB	XGA-2	optional	Desktop			^[61]
56 486SLC3	9556-DEB	IBM 486SLC3	75	MCA, 16-bit	3	3	one 2.88 MB	270 MB	8 MB	16 MB	XGA-2	optional	Desktop
56 486SLC3	9556-DED	IBM 486SLC3	75	MCA, 16-bit	3	3	one 2.88 MB	340 MB	8 MB	16 MB	XGA-2	optional	Desktop			^[62]
56 486SLC3 LS	9556-1EX	IBM 486SLC3	75	MCA, 16-bit	3	3	none	none	4 MB	16 MB	XGA-2	optional	Desktop		Ethernet	^[63]
56 486SLC3 LS	9556-2EX	IBM 486SLC3	75	MCA, 16-bit	3	3	none	none	4 MB	16 MB	XGA-2	optional	Desktop		Token Ring
57 486SLC2	9557-0B6	IBM 486SLC2	50	MCA, 16-bit	5	4	one 2.88 MB	104 MB	8 MB	16 MB	XGA-2	optional	Desktop
57 486SLC2	9557-0BA	IBM 486SLC2	50	MCA, 16-bit	5	4	one 2.88 MB	212 MB	8 MB	16 MB	XGA-2	optional	Desktop
57 486SLC2	9557-0BF	IBM 486SLC2	50	MCA, 16-bit	5	4	one 2.88 MB	400 MB	8 MB	16 MB	XGA-2	optional	Desktop
57 486SLC2	9557-0BG	IBM 486SLC2	50	MCA, 16-bit	5	4	one 2.88 MB	540 MB	8 MB	16 MB	XGA-2	optional	Desktop
Ultimedia M57 486SLC2	9557-1BA	IBM 486SLC2	50	MCA, 16-bit	5	4	one 2.88 MB	212 MB	8 MB	16 MB	XGA-2	optional	Desktop			^[64]
Ultimedia M57 486SLC2	9557-2BA	IBM 486SLC2	50	MCA, 16-bit	5	4	one 2.88 MB	212 MB	8 MB	16 MB	XGA-2	optional	Desktop		ActionMedia II Adapter
57 486SLC2	9557-DB6	IBM 486SLC2	50	MCA, 16-bit	5	4	one 2.88 MB	104 MB	8 MB	16 MB	XGA-2	optional	Desktop			^[65]
57 486SLC2	9557-DBA	IBM 486SLC2	50	MCA, 16-bit	5	4	one 2.88 MB	212 MB	8 MB	16 MB	XGA-2	optional	Desktop
57 486SLC2	9557-DBG	IBM 486SLC2	50	MCA, 16-bit	5	4	one 2.88 MB	540 MB	8 MB	16 MB	XGA-2	optional	Desktop			^[66]
57 486SLC2	9557-KB6	IBM 486SLC2	50	MCA, 16-bit	5	4	one 2.88 MB	104 MB	8 MB	16 MB	XGA-2	optional	Desktop
57 486SLC2	9557-KBA	IBM 486SLC2	50	MCA, 16-bit	5	4	one 2.88 MB	212 MB	8 MB	16 MB	XGA-2	optional	Desktop
57 486SLC2	9557-KBG	IBM 486SLC2	50	MCA, 16-bit	5	4	one 2.88 MB	540 MB	8 MB	16 MB	XGA-2	optional	Desktop
57 486SLC2	9557-QB6	IBM 486SLC2	50	MCA, 16-bit	5	4	one 2.88 MB	104 MB	8 MB	16 MB	XGA-2	optional	Desktop
57 486SLC2	9557-QBA	IBM 486SLC2	50	MCA, 16-bit	5	4	one 2.88 MB	212 MB	8 MB	16 MB	XGA-2	optional	Desktop
57 486SLC2	9557-V01	IBM 486SLC2	50	MCA, 16-bit	5	4	one 2.88 MB	2×212 MB	8 MB	16 MB	XGA-2	optional	Desktop
57 486SLC2	9557-xEB	IBM 486SLC2	50	MCA, 16-bit	5	4	one 2.88 MB	245 MB	8 MB	16 MB	XGA-2	optional	Desktop
57 486SLC2	9557-xEG	IBM 486SLC2	50	MCA, 16-bit	5	4	one 2.88 MB	540 MB	8 MB	16 MB	XGA-2	optional	Desktop
57 486SLC3	9557-DE9	IBM 486SLC3	75	MCA, 16-bit	5	5	one 2.88 MB	270 MB	8 MB	16 MB	XGA-2	optional	Desktop
57 486SLC3	9557-DEB	IBM 486SLC3	75	MCA, 16-bit	5	5	one 2.88 MB	540 MB	8 MB	16 MB	XGA-2	optional	Desktop
57 486SLC3	9557-DED	IBM 486SLC3	75	MCA, 16-bit	5	5	one 2.88 MB	270 MB	8 MB	16 MB	XGA-2	optional	Desktop		Includes CD-ROM and audio card
57 486SLC3	9557-DEG	IBM 486SLC3	75	MCA, 16-bit	5	5	one 2.88 MB	540 MB	8 MB	16 MB	XGA-2	optional	Desktop		Includes CD-ROM and audio card
76 486	9576-0U6	Intel 486SX	33	MCA, 32-bit	3	3	one 2.88 MB	104 MB	8 MB	32 MB	XGA-2	optional	Desktop			^[67]
76 486	9576-0UA	Intel 486SX	33	MCA, 32-bit	3	3	one 2.88 MB	212 MB	8 MB	32 MB	XGA-2	optional	Desktop
76 486	9576-DU6	Intel 486SX	33	MCA, 32-bit	3	3	one 2.88 MB	104 MB	8 MB	32 MB	XGA-2	optional	Desktop
76 486	9576-DUA	Intel 486SX	33	MCA, 32-bit	3	3	one 2.88 MB	212 MB	8 MB	32 MB	XGA-2	optional	Desktop
76 486	9576-KU6	Intel 486SX	33	MCA, 32-bit	3	3	one 2.88 MB	104 MB	8 MB	32 MB	XGA-2	optional	Desktop
76 486	9576-KUA	Intel 486SX	33	MCA, 32-bit	3	3	one 2.88 MB	212 MB	8 MB	32 MB	XGA-2	optional	Desktop
76 486	9576-QU6	Intel 486SX	33	MCA, 32-bit	3	3	one 2.88 MB	104 MB	8 MB	32 MB	XGA-2	optional	Desktop
76 486	9576-QUA	Intel 486SX	33	MCA, 32-bit	3	3	one 2.88 MB	212 MB	8 MB	32 MB	XGA-2	optional	Desktop
76i	9576-ANB	Intel 486DX2	66	MCA, 32-bit	3	3	one 2.88 MB	270 MB	8 MB	64 MB	XGA-2	optional	Desktop		IDE
76i	9576-ATB	Intel 486DX4	100	MCA, 32-bit	3	3	one 2.88 MB	270 MB	8 MB	64 MB	XGA-2	optional	Desktop		IDE
76i	9576-AU9	Intel 486SX	33	MCA, 32-bit	3	3	one 2.88 MB	170 MB	8 MB	64 MB	XGA-2	optional	Desktop		IDE
76i	9576-AUB	Intel 486SX	33	MCA, 32-bit	3	3	one 2.88 MB	270 MB	8 MB	64 MB	XGA-2	optional	Desktop		IDE
76s	9576-BNB	Intel 486DX2	66	MCA, 32-bit	3	3	one 2.88 MB	270 MB	8 MB	64 MB	XGA-2	optional	Desktop		SCSI
76s	9576-BTB	Intel 486DX4	100	MCA, 32-bit	3	3	one 2.88 MB	270 MB	8 MB	64 MB	XGA-2	optional	Desktop		SCSI
76s	9576-BUB	Intel 486SX	33	MCA, 32-bit	3	3	one 2.88 MB	270 MB	8 MB	64 MB	XGA-2	optional	Desktop		SCSI
77 486	9577-0UA	Intel 486SX	33	MCA, 32-bit	5	4	one 2.88 MB	400 MB	8 MB	32 MB	XGA-2	optional	Desktop
77 486	9577-0UF	Intel 486SX	33	MCA, 32-bit	5	4	one 2.88 MB	212 MB	8 MB	32 MB	XGA-2	optional	Desktop
77 486	9577-DU6	Intel 486SX	33	MCA, 32-bit	5	4	one 2.88 MB	104 MB	8 MB	32 MB	XGA-2	optional	Desktop
77 486	9577-DUA	Intel 486SX	33	MCA, 32-bit	5	4	one 2.88 MB	212 MB	8 MB	32 MB	XGA-2	optional	Desktop
77 486	9577-DUG	Intel 486SX	33	MCA, 32-bit	5	4	one 2.88 MB	540 MB	8 MB	32 MB	XGA-2	optional	Desktop
77 486	9577-KUA	Intel 486SX	33	MCA, 32-bit	5	4	one 2.88 MB	212 MB	8 MB	32 MB	XGA-2	optional	Desktop
77 486	9577-KUF	Intel 486SX	33	MCA, 32-bit	5	4	one 2.88 MB	400 MB	8 MB	32 MB	XGA-2	optional	Desktop
77 486	9577-KUG	Intel 486SX	33	MCA, 32-bit	5	4	one 2.88 MB	540 MB	8 MB	32 MB	XGA-2	optional	Desktop
77 486	9577-QUA	Intel 486SX	33	MCA, 32-bit	5	4	one 2.88 MB	212 MB	8 MB	32 MB	XGA-2	optional	Desktop
77 486DX2	9577-0NA	Intel 486DX2	66	MCA, 32-bit	5	4	one 2.88 MB	212 MB	8 MB	32 MB	XGA-2	optional	Desktop			^[68]
77 486DX2	9577-0NF	Intel 486DX2	66	MCA, 32-bit	5	4	one 2.88 MB	400 MB	8 MB	32 MB	XGA-2	optional	Desktop
77 486DX2	9577-DNA	Intel 486DX2	66	MCA, 32-bit	3	3	one 2.88 MB	212 MB	8 MB	32 MB	XGA-2	optional	Desktop
77 486DX2	9577-DNG	Intel 486DX2	66	MCA, 32-bit	3	3	one 2.88 MB	540 MB	8 MB	32 MB	XGA-2	optional	Desktop
77 486DX2	9577-KNA	Intel 486DX2	66	MCA, 32-bit	3	3	one 2.88 MB	212 MB	8 MB	32 MB	XGA-2	optional	Desktop
77 486DX2	9577-KNG	Intel 486DX2	66	MCA, 32-bit	3	3	one 2.88 MB	540 MB	8 MB	32 MB	XGA-2	optional	Desktop
77 486DX2	9577-QNA	Intel 486DX2	66	MCA, 32-bit	3	3	one 2.88 MB	212 MB	8 MB	32 MB	XGA-2	optional	Desktop
Ultimedia M77 486	9577-1UA	Intel 486SX	33	MCA, 32-bit	5	4	one 2.88 MB	212 MB	8 MB	32 MB	XGA-2	optional	Desktop
Ultimedia M77 486DX2	9577-1NA	Intel 486DX2	66	MCA, 32-bit	5	4	one 2.88 MB	212 MB	8 MB	32 MB	XGA-2	optional	Desktop
77i	9577-ANB	Intel 486DX2	66	MCA, 32-bit	5	4	one 2.88 MB	270 MB	8 MB	64 MB	XGA-2	optional	Desktop
77i	9577-ANG	Intel 486DX2	66	MCA, 32-bit	5	4	one 2.88 MB	527 MB	8 MB	64 MB	XGA-2	optional	Desktop
77i	9577-ATB	Intel 486DX4	100	MCA, 32-bit	5	4	one 2.88 MB	270 MB	8 MB	64 MB	XGA-2	optional	Desktop
77i	9577-ATG	Intel 486DX4	100	MCA, 32-bit	5	4	one 2.88 MB	527 MB	8 MB	64 MB	XGA-2	optional	Desktop
77i	9577-AUB	Intel 486SX	33	MCA, 32-bit	5	4	one 2.88 MB	270 MB	8 MB	64 MB	XGA-2	optional	Desktop
77s	9577-BNB	Intel 486DX2	66	MCA, 32-bit	5	4	one 2.88 MB	270 MB	8 MB	64 MB	XGA-2	optional	Desktop
77s	9577-BNG	Intel 486DX2	66	MCA, 32-bit	5	4	one 2.88 MB	540 MB	8 MB	64 MB	XGA-2	optional	Desktop
77s	9577-BTB	Intel 486DX4	100	MCA, 32-bit	5	4	one 2.88 MB	270 MB	8 MB	64 MB	XGA-2	optional	Desktop
77s	9577-BTG	Intel 486DX4	100	MCA, 32-bit	5	4	one 2.88 MB	540 MB	8 MB	64 MB	XGA-2	optional	Desktop
77s	9577-BUB	Intel 486SX	33	MCA, 32-bit	5	4	one 2.88 MB	270 MB	8 MB	64 MB	XGA-2	optional	Desktop
77s	9577-xNB	Intel 486DX2	66	MCA, 32-bit	5	4	one 2.88 MB	270 MB	8 MB	64 MB	XGA-2	optional	Desktop
77s	9577-xNG	Intel 486DX2	66	MCA, 32-bit	5	4	one 2.88 MB	540 MB	8 MB	64 MB	XGA-2	optional	Desktop
77s	9577-xTG	Intel 486DX4	100	MCA, 32-bit	5	4	one 2.88 MB	540 MB	8 MB	64 MB	XGA-2	optional	Desktop
77s	9577-6NB	Intel 486DX2	66	MCA, 32-bit	5	4	one 2.88 MB	270 MB	8 MB	64 MB	S3 928	optional	Desktop		Multimedia, Windows
77s	9577-7NB	Intel 486DX2	66	MCA, 32-bit	5	4	one 2.88 MB	270 MB	8 MB	64 MB	S3 928	optional	Desktop		Multimedia, OS/2
77s	9577-6NG	Intel 486DX2	66	MCA, 32-bit	5	4	one 2.88 MB	540 MB	8 MB	64 MB	S3 928	optional	Desktop		Multimedia, Windows
77s	9577-7NG	Intel 486DX2	66	MCA, 32-bit	5	4	one 2.88 MB	540 MB	8 MB	64 MB	S3 928	optional	Desktop		Multimedia, OS/2
77s	9577-6TG	Intel 486DX2	66	MCA, 32-bit	5	4	one 2.88 MB	540 MB	8 MB	64 MB	S3 928	optional	Desktop		Multimedia, Windows, 256-KB L2 cache
77s	9577-7TG	Intel 486DX2	66	MCA, 32-bit	5	4	one 2.88 MB	540 MB	8 MB	64 MB	S3 928	optional	Desktop		Multimedia, OS/2, 256-KB L2 cache
90 XP 486	8590-0G5	Intel 486SX	20	MCA, 32-bit	4	4	one 1.44 MB	80 MB	4 MB	64 MB	XGA	optional	Desktop			^[69]
90 XP 486	8590-0G9	Intel 486SX	20	MCA, 32-bit	4	4	one 1.44 MB	160 MB	4 MB	64 MB	XGA	optional	Desktop
90 XP 486	8590-0H5	Intel 486SX	25	MCA, 32-bit	4	4	one 1.44 MB	80 MB	4 MB	64 MB	XGA	optional	Desktop
90 XP 486	8590-0H9	Intel 486SX	25	MCA, 32-bit	4	4	one 1.44 MB	160 MB	4 MB	64 MB	XGA	optional	Desktop
90 XP 486	8590-0J5	Intel 486	25	MCA, 32-bit	4	4	one 1.44 MB	80 MB	4 MB	64 MB	XGA	optional	Desktop
90 XP 486	8590-0J9	Intel 80486DX	25	MCA, 32-bit	4	4	one 1.44 MB	160 MB	4 MB	64 MB	XGA	optional	Desktop
90 XP 486	8590-0K9	Intel 80486DX	33	MCA, 32-bit	4	4	one 1.44 MB	320 MB	8 MB	64 MB	XGA	optional	Desktop
90 XP 486	8590-0KD	Intel 80486DX	33	MCA, 32-bit	4	4	one 1.44 MB	320 MB	4 MB	64 MB	XGA	optional	Desktop
90 XP 486	8590-0KF	Intel 80486DX	33	MCA, 32-bit	4	4	one 1.44 MB	400 MB	8 MB	64 MB	XGA	optional	Desktop
90 XP 486	8590-0L9	Intel 486DX2	50	MCA, 32-bit	4	4	one 2.88 MB	160 MB	8 MB	64 MB	XGA	optional	Desktop			^[70]
90 XP 486	8590-0LF	Intel 486DX2	50	MCA, 32-bit	4	4	one 2.88 MB	400 MB	8 MB	64 MB	XGA	optional	Desktop
90 XP 486	9590-0LA	Intel 486DX2	50	MCA, 32-bit	4	4	one 2.88 MB	212 MB	8 MB	64 MB	XGA-2	optional	Desktop			^[71]
90 XP 486	9590-0LF	Intel 486DX2	50	MCA, 32-bit	4	4	one 2.88 MB	400 MB	8 MB	64 MB	XGA-2	optional	Desktop
90 XP 486	9590-DLA	Intel 486DX2	50	MCA, 32-bit	4	4	one 2.88 MB	212 MB	8 MB	64 MB	XGA-2	optional	Desktop		Windows 3.1
90 XP 486	9590-DLG	Intel 486DX2	50	MCA, 32-bit	4	4	one 2.88 MB	540 MB	8 MB	64 MB	XGA-2	optional	Desktop		Windows 3.1
90 XP 486	9590-KLA	Intel 486DX2	50	MCA, 32-bit	4	4	one 2.88 MB	212 MB	8 MB	64 MB	XGA-2	optional	Desktop		OS/2
90 XP 486	9590-KLG	Intel 486DX2	50	MCA, 32-bit	4	4	one 2.88 MB	540 MB	8 MB	64 MB	XGA-2	optional	Desktop		OS/2
90 XP 486	9590-QLA	Intel 486DX2	50	MCA, 32-bit	4	4	one 2.88 MB	212 MB	8 MB	64 MB	XGA-2	optional	Desktop		OS/2
95 XP 486	8595-0G9	Intel 486SX	20	MCA, 32-bit	8	8	one 1.44 MB	160 MB	4 MB	64 MB	XGA	optional	Tower			^[72]
95 XP 486	8595-0GF	Intel 486SX	20	MCA, 32-bit	8	8	one 1.44 MB	400 MB	4 MB	64 MB	XGA	optional	Tower
95 XP 486	8595-0H9	Intel 486SX	25	MCA, 32-bit	8	8	one 1.44 MB	160 MB	8 MB	64 MB	XGA	optional	Tower
95 XP 486	8595-0HF	Intel 486SX	25	MCA, 32-bit	8	8	one 1.44 MB	400 MB	8 MB	64 MB	XGA	optional	Tower
95 XP 486	8595-0J9	Intel 486	25	MCA, 32-bit	8	8	one 1.44 MB	160 MB	8 MB	64 MB	XGA	optional	Tower
95 XP 486	8595-0JD	Intel 486	25	MCA, 32-bit	8	8	one 1.44 MB	320 MB	8 MB	64 MB	XGA	optional	Tower
95 XP 486	8595-0JF	Intel 486	25	MCA, 32-bit	8	8	one 1.44 MB	400 MB	8 MB	64 MB	XGA	optional	Tower
95 XP 486	8595-0KD	Intel 486	33	MCA, 32-bit	8	8	one 1.44 MB	320 MB	8 MB	64 MB	XGA	optional	Tower
95 XP 486	8595-0KF	Intel 486	33	MCA, 32-bit	8	8	one 1.44 MB	400 MB	8 MB	64 MB	XGA	optional	Tower
95 XP 486	8595-0LF	Intel 486DX2	50	MCA, 32-bit	8	8	one 1.44 MB	400 MB	8 MB	64 MB	XGA	optional	Tower
95 XP 486	8595-0M6	Intel 486DX2	50	MCA, 32-bit	8	7	one 1.44 MB	104 MB	16 MB	64 MB	XGA	optional	Tower			^[73]
95 XP 486	8595-0M9	Intel 486DX2	50	MCA, 32-bit	8	7	one 1.44 MB	160 MB	16 MB	64 MB	XGA	optional	Tower
95 XP 486	8595-0MA	Intel 486DX2	50	MCA, 32-bit	8	7	one 1.44 MB	208 MB/212 MB	16 MB	64 MB	XGA	optional	Tower
95 XP 486	8595-0MD	Intel 486DX2	50	MCA, 32-bit	8	7	one 1.44 MB	320 MB	16 MB	64 MB	XGA	optional	Tower
95 XP 486	8595-0MF	Intel 486DX2	50	MCA, 32-bit	8	7	one 1.44 MB	400 MB	16 MB	64 MB	XGA	optional	Tower
95 XP 486	8595-0MG	Intel 486DX2	50	MCA, 32-bit	8	7	one 1.44 MB	540 MB	16 MB	64 MB	XGA	optional	Tower
95 XP 486	8595-0MT	Intel 486DX2	50	MCA, 32-bit	8	7	one 1.44 MB	1 GB	16 MB	64 MB	XGA	optional	Tower
95 XP 486	9595-0L6	Intel 486DX2	50	MCA, 32-bit	8	8	one 1.44 MB	104 MB	8 MB	64 MB	XGA-2	optional	Tower
95 XP 486	9595-0L9	Intel 486DX2	50	MCA, 32-bit	8	8	one 1.44 MB	160 MB	8 MB	64 MB	XGA-2	optional	Tower
95 XP 486	9595-0LA	Intel 486DX2	50	MCA, 32-bit	8	8	one 1.44 MB	208 MB/212 MB	8 MB	64 MB	XGA-2	optional	Tower
95 XP 486	9595-0LD	Intel 486DX2	50	MCA, 32-bit	8	8	one 1.44 MB	320 MB	8 MB	64 MB	XGA-2	optional	Tower
95 XP 486	9595-0LF	Intel 486DX2	50	MCA, 32-bit	8	8	one 1.44 MB	400 MB	8 MB	64 MB	XGA-2	optional	Tower
95 XP 486	9595-0LG	Intel 486DX2	50	MCA, 32-bit	8	8	one 1.44 MB	540 MB	8 MB	64 MB	XGA-2	optional	Tower
95 XP 486	9595-0LT	Intel 486DX2	50	MCA, 32-bit	8	8	one 1.44 MB	1 GB	8 MB	64 MB	XGA-2	optional	Tower
E	9533	IBM 486SLC2	50	ISA, 16-bit	4	1	one 1.44 MB	350 MB/none	4 MB	16 MB	XGA-2	optional CRT/LCD	Small form factor desktop

PS/2 Server

See also: Lenovo System x.

+ IBM PS/2 Server models	Model	IBM	Processor	Clock speed	Bus		No. of drive bays			Stock	Maximum	Video adapter	Monitor	Form factor	Date introduced	Notes
Server 85	9585-0X6	Intel 486SX	33	MCA, 32-bit	8	7	one 2.88 MB	104 MB	8 MB	64 MB	SVGA	optional	Tower			^[74] ^[75]
Server 85	9585-0X9	Intel 486SX	33	MCA, 32-bit	8	7	one 2.88 MB	160 MB	8 MB	64 MB	SVGA	optional	Tower
Server 85	9585-0XA	Intel 486SX	33	MCA, 32-bit	8	7	one 2.88 MB	208 MB/212 MB	8 MB	64 MB	SVGA	optional	Tower
Server 85	9585-0XD	Intel 486SX	33	MCA, 32-bit	8	7	one 2.88 MB	320 MB	8 MB	64 MB	SVGA	optional	Tower
Server 85	9585-0XF	Intel 486SX	33	MCA, 32-bit	8	7	one 2.88 MB	400 MB	8 MB	64 MB	SVGA	optional	Tower
Server 85	9585-0XG	Intel 486SX	33	MCA, 32-bit	8	7	one 2.88 MB	540 MB	8 MB	64 MB	SVGA	optional	Tower
Server 85	9585-0XT	Intel 486SX	33	MCA, 32-bit	8	7	one 2.88 MB	1 GB	8 MB	64 MB	SVGA	optional	Tower
Server 85	9585-0KG	Intel 486	33	MCA, 32-bit	8	7	one 2.88 MB	540 MB	8 MB	256 MB	SVGA	optional	Tower			^[76] ^[77]
Server 85	9585-0KT	Intel 486	33	MCA, 32-bit	8	7	one 2.88 MB	1 GB	8 MB	256 MB	SVGA	optional	Tower
Server 85	9585-0NG	Intel 486DX2	66	MCA, 32-bit	8	7	one 2.88 MB	540 MB	8 MB	256 MB	SVGA	optional	Tower			^[78] ^[79]
Server 85	9585-0NT	Intel 486DX2	66	MCA, 32-bit	8	7	one 2.88 MB	1 GB	8 MB	256 MB	SVGA	optional	Tower
Server 85	9585-4Vx	Intel 486SX	33	MCA, 32-bit	8	7	one 2.88 MB	400 MB	8 MB	64 MB	SVGA	optional	Tower
Server 85	9585-Z0x	Intel 486SX	33	MCA, 32-bit	8	7	one 2.88 MB	400 MB	8 MB	64 MB	SVGA	optional	Tower
Premium Server 85	9585-4Ux	Intel 486SX	33	MCA, 32-bit	8	7	one 2.88 MB	400 MB	8 MB	64 MB	SVGA	optional	Tower
Server 95	8595-0K6	Intel 486	33	MCA, 32-bit	8	8	one 1.44 MB	104 MB	8 MB	256 MB	SVGA	optional	Tower			^[80]
Server 95	8595-0K9	Intel 486	33	MCA, 32-bit	8	8	one 1.44 MB	160 MB	8 MB	256 MB	SVGA	optional	Tower
Server 95	8595-0KA	Intel 486	33	MCA, 32-bit	8	8	one 1.44 MB	208 MB/212 MB	8 MB	256 MB	SVGA	optional	Tower
Server 95	8595-0KG	Intel 486	33	MCA, 32-bit	8	8	one 1.44 MB	540 MB	8 MB	256 MB	SVGA	optional	Tower
Server 95	8595-0KT	Intel 486	33	MCA, 32-bit	8	8	one 1.44 MB	1 GB	8 MB	256 MB	SVGA	optional	Tower
Server 95	8595-0L6	Intel 486	50	MCA, 32-bit	8	8	one 1.44 MB	104 MB	8 MB	256 MB	SVGA	optional	Tower			^[81]
Server 95	8595-0L9	Intel 486	50	MCA, 32-bit	8	8	one 1.44 MB	160 MB	8 MB	256 MB	SVGA	optional	Tower
Server 95	8595-0LA	Intel 486	50	MCA, 32-bit	8	8	one 1.44 MB	208 MB/212 MB	8 MB	256 MB	SVGA	optional	Tower
Server 95	8595-0LD	Intel 486	50	MCA, 32-bit	8	8	one 1.44 MB	320 MB	8 MB	256 MB	SVGA	optional	Tower
Server 95	8595-0LG	Intel 486	50	MCA, 32-bit	8	8	one 1.44 MB	540 MB	8 MB	256 MB	SVGA	optional	Tower			^[82]
Server 95	8595-0LT	Intel 486	50	MCA, 32-bit	8	8	one 1.44 MB	1 GB	8 MB	256 MB	SVGA	optional	Tower
Server 95	9595-0M6	Intel 486	50	MCA, 32-bit	8	8	one 1.44 MB	104 MB	16 MB	256 MB	SVGA	optional	Tower			^[83]
Server 95	9595-0M9	Intel 486	50	MCA, 32-bit	8	8	one 1.44 MB	160 MB	16 MB	256 MB	SVGA	optional	Tower
Server 95	9595-0MA	Intel 486	50	MCA, 32-bit	8	8	one 1.44 MB	208 MB/212 MB	16 MB	256 MB	SVGA	optional	Tower
Server 95	9595-0MD	Intel 486	50	MCA, 32-bit	8	8	one 1.44 MB	320 MB	16 MB	256 MB	SVGA	optional	Tower
Server 95	9595-0MF	Intel 486	50	MCA, 32-bit	8	8	one 1.44 MB	400 MB	16 MB	256 MB	SVGA	optional	Tower
Server 95	9595-0MG	Intel 486	50	MCA, 32-bit	8	8	one 1.44 MB	540 MB	16 MB	256 MB	SVGA	optional	Tower
Server 95	9595-0MT	Intel 486	50	MCA, 32-bit	8	8	one 1.44 MB	1 GB	16 MB	256 MB	SVGA	optional	Tower
Server 95	9595-1NG	Intel 486DX2	66	MCA, 32-bit	8	7	one 1.44 MB	540 MB	16 MB	256 MB	SVGA	optional	Tower			^[84]
Server 95	9595-1NT	Intel 486DX2	66	MCA, 32-bit	8	7	one 1.44 MB	1 GB	16 MB	256 MB	SVGA	optional	Tower
Server 95	9595-1NV	Intel 486DX2	66	MCA, 32-bit	8	7	one 1.44 MB	2 GB	16 MB	256 MB	SVGA	optional	Tower			^[85]
Server 95	9595-0PT	Intel Pentium	60	MCA, 32-bit	8	7	one 1.44 MB	540 MB	16 MB	256 MB	SVGA	optional	Tower			^[86]
Server 95	9595-0PV	Intel Pentium	60	MCA, 32-bit	8	7	one 1.44 MB	1 GB	16 MB	256 MB	SVGA	optional	Tower
Server 95	9595-0QG	Intel Pentium	66	MCA, 32-bit	8	7	one 1.44 MB	540 MB	16 MB	256 MB	SVGA	optional	Tower			^[87]
Server 95	9595-0QT	Intel Pentium	66	MCA, 32-bit	8	7	one 1.44 MB	1 GB	16 MB	256 MB	SVGA	optional	Tower			^[88]
Server 95	9595-0QV	Intel Pentium	66	MCA, 32-bit	8	7	one 1.44 MB	1 GB	16 MB	256 MB	SVGA	optional	Tower
Server 95 Array	9595-3NG	Intel 486DX2	66	MCA, 32-bit	8	9	one 1.44 MB	3×540 MB	8 MB	256 MB	SVGA	optional	Tower			^[89]
Server 95 Array	9595-3NT	Intel 486DX2	66	MCA, 32-bit	8	9	one 1.44 MB	3×1 GB	8 MB	256 MB	SVGA	optional	Tower
Server 95 Array	9595-3NT	Intel 486DX2	66	MCA, 32-bit	8	9	one 1.44 MB	3×1 GB	8 MB	256 MB	SVGA	optional	Tower
Server 95 Array	9595-3PG	Intel Pentium	60	MCA, 32-bit	8	9	one 1.44 MB	3×540 MB	8 MB	256 MB	SVGA	optional	Tower
Server 95 Array	9595-3PT	Intel Pentium	60	MCA, 32-bit	8	9	one 1.44 MB	3×1 GB	8 MB	256 MB	SVGA	optional	Tower
Server 95 Array	9595-3QG	Intel Pentium	66	MCA, 32-bit	8	9	one 1.44 MB	3×540 MB	8 MB	256 MB	SVGA	optional	Tower
Server 95 Array	9595-3QT	Intel Pentium	66	MCA, 32-bit	8	9	one 1.44 MB	3×1 GB	8 MB	256 MB	SVGA	optional	Tower
Premium Server 95	9595-Z0x	Intel 486DX2 Intel Pentium	66	MCA, 32-bit	8	7	one 2.88 MB	1 GB	8 MB	256 MB	SVGA	optional	Tower		Pre-installed with IBM LAN Server or Novell NetWare	^[90]
Server 295	8600-001	Intel 486	33	MCA, 32-bit, dual	12	10	one 1.44 MB	400 MB/1 GB	32 MB	128 MB	SVGA	optional	Tower		Supports up to 28 GB of hot-swappable hard drive storage, RAID-5 compatible, dual processor optional, accepts only IBM 400 MB or 1 GB disks	^[91] ^[92] ^[93]
Server 295	8600-002	Intel 486	50	MCA, 32-bit, dual	12	10	one 1.44 MB	400 MB/1 GB	32 MB	128 MB	SVGA	optional	Tower		Supports up to 28 GB of hot-swappable hard drive storage, RAID-5 compatible, dual processor optional, accepts only IBM 400 MB or 1 GB disks
Server 195	8600-003	2×Intel 486	50	MCA, 32-bit, dual	12	10	one 1.44 MB	400 MB/1 GB	32 MB	128 MB	SVGA	optional	Tower		Supports up to 28 GB of hard drive storage, RAID-5 compatible, dual processor standard, accepts only IBM 400 MB or 1 GB disks	^[94]

Portables

See also: IBM PS/2 portable computers.

+ IBM PS/2 portable models	Model	IBM	Processor	Clock speed	Bus		No. of drive bays			Stock	Maximum	Video adapter	Monitor	Form factor	Date introduced	Notes
P70	8573-031	Intel 386	16	MCA, 32-bit	2, 1-16bit1- 32bit	0	one 1.44 MB	30 MB	2 MB	8 MB	VGA	Monochrome gas plasma	Portable		Includes slot for optional i387 co-processor	^[95]
P70	8573-061	Intel 386	20	MCA, 32-bit	2	0	one 1.44 MB	60 MB	2 MB	8 MB	VGA	Monochrome gas plasma	Portable		Includes slot for optional i387 co-processor
P70	8573-121	Intel 386	20	MCA, 32-bit	2	0	one 1.44 MB	120 MB	2 MB	8 MB	VGA	Monochrome gas plasma	Portable		Includes slot for optional i387 co-processor
P75	8573-161	Intel 486	33	MCA, 32-bit	4	0	one 1.44 MB	160 MB	4 MB	16 MB	VGA	Monochrome gas plasma	Portable		SCSI controller built into planar
P75	8573-401	Intel 486	33	MCA, 32-bit	4	0	one 1.44 MB	400 MB	4 MB	16 MB	VGA	Monochrome gas plasma	Portable		SCSI controller built into planar
L40 SX	8543-A44	Intel 386SX	20	ISA, 16-bit	0	0	one 1.44	60 MB	2 MB	18 MB	VGA	Monochrome LCD	Laptop			^[96]
N51SX	8551-033	Intel 386SX	16	Proprietary	2		one 1.44	40 MB	2 MB	10 MB	VGA	Monochrome LCD	Notebook
N51SLC	8551-025	IBM 386SLC	16	Proprietary	2		one 1.44	80 MB	2 MB	10 MB	VGA	Monochrome LCD	Notebook
N33SX	8533-A33	Intel 386SX	16	Proprietary	2		one 1.44	40 MB				Monochrome LCD	Notebook
N33SX	8533-A35	Intel 386SX	16	Proprietary	2		one 1.44	80 MB				Monochrome LCD	Notebook
CL57 SX	8554-045	IBM 386SLC	16	Proprietary	2		one 1.44	80 MB	2 MB	16 MB	VGA	Color TFT	Laptop

Related systems

+ IBM PS/2-related systems	Name	IBM	Processor	Clock speed	Bus		No. of drive bays			Stock	Maximum	Video adapter	Monitor	Form factor	Date introduced	Notes
Academic System	6152-022	Intel 80286 ROMP 032	10	MCA, 16-bit	8	4	one 1.44	20 MB	2 MB	8 MB	VGA	optional	Tower		ROMP processor on daughter card, cannot work in parallel with 286	^[97] ^[98] ^[99]
Academic System	6152-024	Intel 80286 ROMP 032	10	MCA, 16-bit	8	4	one 1.44	20 MB	4 MB	8 MB	VGA	optional	Tower		ROMP processor on daughter card, cannot work in parallel with 286
Academic System	6152-044	Intel 80286 ROMP 032	10	MCA, 16-bit	8	4	one 1.44	44 MB	4 MB	8 MB	VGA	optional	Tower		ROMP processor on daughter card, cannot work in parallel with 286
Academic System	6152-048	Intel 80286 ROMP 032	10	MCA, 16-bit	8	4	one 1.44	44 MB	8 MB	8 MB	VGA	optional	Tower		ROMP processor on daughter card, cannot work in parallel with 286
Academic System	6152-074	Intel 80286 ROMP 032	10	MCA, 16-bit	8	4	one 1.44	70 MB	4 MB	8 MB	VGA	optional	Tower		ROMP processor on daughter card, cannot work in parallel with 286
Academic System	6152-078	Intel 80286 ROMP 032	10	MCA, 16-bit	8	4	one 1.44	70 MB	8 MB	8 MB	VGA	optional	Tower		ROMP processor on daughter card, cannot work in parallel with 286
Clinical Workstation	7690	Intel 8086	8 (0)	ISA, 8-bit	4	0	one 1.44 MB	none	640 KB	8 MB	MCGA	Monochrome LCD	Mobile workstation		Purpose-built mobile workstation using the Model 25 system board and Model 30 firmware for the healthcare sector; pairs with the IBM 7496 Executive Workstation	^[100]
EduQuest Thirty	9603	IBM 386SLC	25	ISA, 16-bit	4	2	one 1.44 MB	30 MB	1–4 MB	20 MB	SVGA	14-in. color	All-in-one		Model 25 adapted specifically for educational institutions, optional sound card, late models without IBM logo on badge	^[101] ^[102] ^[103]
EduQuest Forty	9604	Intel 486SX	25	ISA, 16-bit	4	2	one 1.44 MB	30 MB	4 MB	20 MB	SVGA	14-in. color	All-in-one		Model 25 adapted specifically for educational institutions, optional sound card, late models without IBM logo on badge
EduQuest Fifty	9605	Intel 486SX	25	ISA, 16-bit	4	2	one 1.44 MB	30 MB	4 MB	20 MB	SVGA	14-in. color	All-in-one		Model 25 adapted specifically for educational institutions, optional sound card, late models without IBM logo on badge
EduQuest Thirty-cs	9606	Cyrix Cx486SLC2	25/50	ISA, 16-bit	4	2	one 1.44 MB				SVGA	14-in. color	All-in-one		Model 25 adapted specifically for educational institutions, optional sound card	^[104] ^[105]
EduQuest Fifty-cs	9608	Intel 486DX2	33	ISA, 16-bit	4	2	one 1.44 MB				SVGA	14-in. color	All-in-one		Model 25 adapted specifically for educational institutions, optional sound card
EduQuest Thirty-five	9613	Cyrix Cx486SLC2	25/50	ISA, 16-bit	4	2	one 1.44 MB	133 MB/256 MB/342 MB	4 MB		SVGA	14-in. color	All-in-one		Model 25 adapted specifically for educational institutions, optional sound card, late models without IBM logo on badge	^[106]
EduQuest Fifty-five	9615	Intel 486	33–100	ISA, 16-bit	4	2	one 1.44 MB	170 MB/360 MB/540 MB	4 MB	64 MB	SVGA	14-in. color	All-in-one		Model 25 adapted specifically for educational institutions, optional sound card, six processor options offered
EduQuest Forty-five	9614	Intel 486DX2	50 or 66	ISA, 16-bit	4	2	one 1.44 MB		4 MB		SVGA	14-in. color	All-in-one		Model 25 adapted specifically for educational institutions, optional sound card	^[107]
Executive Workstation	7496	Intel 8086	8 (0)	ISA, 8-bit	3	0	one 720 KB	none	640 KB	640 KB	MCGA	Monochrome	All-in-one		Purpose-built all-in-one computer using the Model 30 system board for the healthcare sector; pairs with the IBM 7690 Clinical Workstation (image 1, 2)	^[108]
GE Fanuc Workmaster II	7186	Intel 386	16	MCA, 32-bit	0	0	one 1.44 MB	30 MB	2 MB	8 MB	VGA	Monochrome gas plasma	Portable		General Electric Fanuc-branded ruggedized industrial PS/2 P70 in black plastic case	^[109]
Industrial Computer	7552-040	Intel 80286	10	ISA, 16-bit MCA, 16-bit	8	3	none	none	512 KB	3 MB	EGA	optional	Benchtop or rack mount		Also known as "Gearbox", rack-mountable ruggedized modular industrial computer, hybrid MCA and ISA with compromised ISA signal lines—notable for introducing the (16-bit) Micro Channel architecture half a year before the announcement of the PS/2 line in April 1987	^[110] ^[111] ^[112] ^[113]
Industrial Computer	7552-140	Intel 80286	10	ISA, 16-bit MCA, 16-bit	8	3	one 1.44 MB	20 MB	512 KB	3 MB	VGA	optional	Benchtop or rack mount		Also known as "Gearbox", rack-mountable ruggedized modular industrial computer, hybrid MCA and ISA with compromised ISA signal lines—notable for introducing the (16-bit) Micro Channel architecture half a year before the announcement of the PS/2 line in April 1987
Industrial Computer	7541	Intel 80286	10	MCA, 16-bit	3	3	one 1.44 MB	30 MB	1 MB	8 MB 16 MB	VGA	optional	Benchtop		Desktop ruggedized industrial PS/2	^[114] ^[115]
Industrial Computer	7542	Intel 80286	10	MCA, 16-bit	4	3	one 1.44 MB	30 MB	1 MB	8 MB 16 MB	VGA	optional	Rack mount		Rack-mounted ruggedized industrial PS/2
Industrial Computer	7561	Intel 386	20	MCA, 32-bit	3	4	one 1.44 MB	60 MB	2 MB	8 MB 16 MB	VGA	optional	Benchtop		Desktop ruggedized industrial PS/2
Industrial Computer	7562	Intel 386	20	MCA, 32-bit	4	4	one 1.44 MB	60 MB	2 MB	8 MB 16 MB	VGA	optional	Rack mount		Rack-mounted ruggedized industrial PS/2
Industrial Computer	7546	Intel 386SX	20	MCA, 16-bit	5	4	one 2.88 MB	320/400 MB	4 MB	16 MB	VGA	optional	Benchtop or rack mount		Rack-mountable desktop ruggedized industrial PS/2	^[116]
Industrial Computer	7568-040	Intel 386	25	MCA, 32-bit ISA, 16-bit	8	3	one 1.44 MB	none	4 MB	8 MB 16 MB	VGA	optional	Benchtop or rack mount		Also known as "Gearbox 800", rack-mountable ruggedized modular industrial PS/2	^[117] ^[118]
Industrial Computer	7568-150	Intel 386	25	MCA, 32-bit ISA, 16-bit	8	3	one 1.44 MB	120 MB	8 MB	8 MB 16 MB	VGA	optional	Benchtop or rack mount		Also known as "Gearbox 800", rack-mountable ruggedized modular industrial PS/2
Industrial Computer	7568-C40	Intel 486	25	MCA, 32-bit ISA, 16-bit	8	3	one 1.44 MB	optional	8 MB	8 MB 16 MB	VGA	optional	Benchtop or rack mount		Also known as "Gearbox 800", rack-mountable ruggedized modular industrial PS/2	^[119]
Industrial Computer	7568-D40	Intel 486DX2	50	MCA, 32-bit ISA, 16-bit	8	3	one 1.44 MB	optional	8 MB	8 MB 16 MB	VGA	optional	Benchtop or rack mount		Also known as "Gearbox 800", rack-mountable ruggedized modular industrial PS/2	^[120]
Personal Typing System	6901-001	Intel 8086	8 (0)	ISA, 8-bit	0	2	one 720 KB	none	640 KB	640 KB	MCGA	12-in. monochrome	Desktop		Slightly modified application-specific Model 30 with word processing software, networking expansion card, and Wheelwriter	^[121]
Personal Typing System	6901-002	Intel 8086	8 (0)	ISA, 8-bit	0	2	one 720 KB	none	640 KB	640 KB	MCGA	12-in. monochrome	Desktop		Slightly modified application-specific Model 30 with word processing software, networking expansion card, and Quietwriter
Personal Typing System	6901-003	Intel 8086	8 (0)	ISA, 8-bit	0	2	one 720 KB	none	640 KB	640 KB	MCGA	12-in. color	Desktop		Slightly modified application-specific Model 30 with word processing software, networking expansion card, and Wheelwriter
Personal Typing System	6901-004	Intel 8086	8 (0)	ISA, 8-bit	0	2	one 720 KB	none	640 KB	640 KB	MCGA	12-in. color	Desktop		Slightly modified application-specific Model 30 with word processing software, networking expansion card, and Quietwriter
Personal Typing System	6901-005	Intel 8086	8 (0)	ISA, 8-bit	0	2	one 720 KB	none	640 KB	640 KB	MCGA	12-in. monochrome	Desktop		Slightly modified application-specific Model 30 with word processing software and networking expansion card
Personal Typing System	6901-006	Intel 8086	8 (0)	ISA, 8-bit	0	2	one 720 KB	none	640 KB	640 KB	MCGA	12-in. color	Desktop		Slightly modified application-specific Model 30 with word processing software and networking expansion card
Personal Typing System/2	6907	Intel 8086	8 (0)	ISA, 8-bit	2	2	one 1.44 MB	none	640 KB	640 KB	MCGA	optional	Desktop		Slightly modified application-specific Model 30 with word processing software and networking expansion card, Wheelwriter optional	^[122] ^[123]
Personal Typing System/2 286	6908	Intel 80286	10 (1)	ISA, 16-bit	2	2	one 1.44 MB	none	1 MB	1 MB	VGA	optional	Desktop		Slightly modified application-specific Model 30 286 with word processing software and networking expansion card, Wheelwriter optional

See also

• List of third-party Micro Channel computers
• List of IBM Personal Computer models

Notes and References

1. Short Looks: IBM PS/2 Model 25. InfoWorld. CW Communications. Google Books. August 17, 1987. 9. 33.
2. Gibson. Stanley. IBM banks on options for PS/2s. Computerworld. November 9, 1987. CW Communications. 24. XXI. 45. Google Books.
3. Mardesich. Jodi. IBM Joins Diskless Workstation Market with 386SX Machine. InfoWorld. October 15, 1990. CW Communications. 12. 42. Google Books. 39.
4. Burns. Christine. IBM Offers 7 New Servers. Network World. September 20, 1993. IDG Publications. 10. 38. Google Books. 24, 27.
5. Web site: IBM PS/2 (Model 25) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
6. Web site: IBM Personal System/2 and IBM Personal Computer Product Reference, Version 4.0. September 1988. International Business Machines Corporation. September 29, 2021. 44. Bitsavers.
7. Web site: IBM Personal System/2 and IBM Personal Computer Product Reference, Version 4.0. September 1988. International Business Machines Corporation. September 29, 2021. 43. Bitsavers.
8. Web site: IBM PS/2 (Model 25-286) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
9. News: Lunan. Charles. January 1992. IBM Goes After School Computer Market. Sun Sentinel. Tribune Publishing Company. D3. ProQuest. On Tuesday, IBM released the first product developed by [Jose] Garcia's team: the Model 25 SX. The new model uses the same Intel 386SX microprocessor ... to run the graphics-rich software popular with teachers. It will be able to display up to 256 different colors and come standard with connections for overhead projection systems and computer networks. The new models will become available in April at $1,249 to $1,899, IBM said..
10. Web site: Walsh. William. June 15, 2005. IBM PS/2 Model 25SX. Walsh Computer Technology. September 29, 2021.
11. Book: Mueller, Scott . 1994 . Upgrading and Repairing PCs . Que . 1120–1121 . 4th . 9781565299320 . the Internet Archive.
12. April 10, 1989 . IBM cuts prices on three PS/2s . Computer & Software News . Lebhar-Friedman, Inc. . 7 . 15 . 3 et seq . Gale.
13. Web site: IBM PS/2 (Model 30) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
14. Web site: IBM Personal System/2 and IBM Personal Computer Product Reference, Version 4.0. September 1988. International Business Machines Corporation. September 29, 2021. 44. Bitsavers.
15. Gibson. Stanley. IBM banks on options for PS/2s. Computerworld. November 9, 1987. CW Communications. 24. XXI. 45. Google Books.
16. Web site: IBM PS/2 (Model 30-286) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
17. Web site: IBM Personal System/2 Model 30 286 (8530-E31). International Business Machines Corporation. September 29, 2021. September 26, 1989.
18. Web site: IBM Personal System/2 Model 30 286 (8530-E41). International Business Machines Corporation. September 29, 2021. April 23, 1991.
19. Web site: September 21, 1992 . IBM Sales Manual (US) – Document 5765-160: IBM AIX PS/2 Operating System v1.3 . International Business Machines Corporation . https://web.archive.org/web/20221105045507/http://ps-2.kev009.com/moreaixps2/aix-supp-hw.html . November 5, 2022.
20. Web site: IBM PS/2 (Model 35 SX/35 LS) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
21. Web site: IBM PS/2 (Model 35 SLC) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
22. Buckler . Grant . August 5, 1992 . IBM Canada cuts PS/2 prices . Newsbytes . The Washington Post Company . Gale.
23. Web site: IBM PS/2 (Model 40 SX) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
24. Web site: IBM PS/2 (Model 40 SLC) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
25. Web site: IBM PS/2 (Model 50) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
26. Book: Bowlds, Pat A. . 1991 . Micro Channel Architecture: Revolution in Personal Computing . Van Nostrand Reinhold . 338–339 . 9780442004330 . Google Books.
27. Web site: IBM PS/2 (Model 50 Z) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
28. Book: Mueller, Scott . 1994 . Upgrading and Repairing PCs . Que . 1124–1125 . 4th . 9781565299320 . the Internet Archive.
29. Web site: IBM PS/2 (Model 55 SX/55 LS) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
30. Brennan . Laura . October 15, 1990 . By naming, pricing diskless PC, IBM bolsters LAN lineup . PC Week . Ziff-Davis . 7 . 41 . 10 . Gale.
31. Web site: IBM PS/2 (Model 56 SX/56 LS) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
32. March 2, 1992 . IBM intros its fastest 386SX systems to keep PS/2 ahead of the pack . EDGE . EDGE Publishing . 3 . 93 . 44 . Gale.
33. Web site: IBM PS/2 (Model 56 SX/56 LS) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
34. Web site: July 29, 2002 . List of IBM Vintage PCs . Mastodonic Personal Computers . https://web.archive.org/web/20230929022118/https://mastodonpc.tripod.com/ibm/type.html . September 29, 2023.
35. Web site: IBM PS/2 (Model 56 SLC/56 SLC LS) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
36. Web site: IBM PS/2 (Model 57 SX) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
37. Web site: IBM PS/2 (Model 57 SLC) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
38. Book: Mueller, Scott . 1994 . Upgrading and Repairing PCs . Que . 1126–1127 . 4th . 9781565299320 . the Internet Archive.
39. Web site: IBM PS/2 (Model 60) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
40. Web site: IBM PS/2 (Model 65 SX) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
41. Woods . Wendy . October 30, 1990 . IBM rolls out high-end PS/2s, low-memory OS/2 version . Newsbytes . The Washington Post Company . Gale.
42. Web site: IBM PS/2 (Model 70-Axx) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
43. Chartock . David S. . June 6, 1988 . You asked for them; IBM adds 2 PS/2 models . Computer & Software News . Lebhar-Friedman . 6 . 23 . 1 et seq. . Gale.
44. Brennan . Laura . Doug Chandler . November 14, 1988 . High-end PS/2 Model 70 delayed while IBM awaits FCC approval . PC Week . Ziff-Davis . 5 . 46 . 4 . Gale.
45. Spiegelman . Lisa L. . December 12, 1988 . First wave of 25MHz '386s sweeps market . PC Week . Ziff-Davis . 5 . 50 . 57 et seq. . Gale.
46. Web site: IBM PS/2 (Model 70 486) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
47. Sexton . Tara . December 25, 1989 . IBM Model 70 486 enters race as the fastest PS/2—so far . PC Week . Ziff-Davis . 6 . 51 . 1 et seq. . Gale.
48. Web site: IBM PS/2 (Model 80) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
49. LaPlante . Alice . August 10, 1987 . New Model 80 Offers 314MB Disk . InfoWorld . IDB Publications . 9 . 32 . 1, 89 . Google Books.
50. Pitta . Julie . February 8, 1988 . Deskpro powers up . Computerworld . IDG Publications . XXII . 6 . 33, 36 . Google Books.
51. Book: Halliday, Caroline M. . James A. Shields . 1988 . IBM PS/2: Technical Guide . Howard W. Sams . 26 . 9780672226281 . Google Books.
52. Web site: IBM Personal System/2 Model 80 (8580-081, 161 and A16) Announcement Letter. October 30, 1990. International Business Machines Corporation. September 29, 2021. https://web.archive.org/web/20210929001302/https://www.ibm.com/common/ssi/ShowDoc.wss?docURL=%2Fcommon%2Fssi%2Frep_ca%2F7%2F897%2FENUS190-177%2Findex.html&lang=en&request_locale=en. September 29, 2021.
53. Pappas . Kim . November 3, 1987 . IBM ships 115M-byte version of PS/2 Model 80 . PC Week . Ziff-Davis . 4 . 44 . 4 . Gale.
54. Scannell . Ed . Alice LaPlante . March 26, 1990 . IBM Unveils New PS/2s with Fast SCSI Storage . InfoWorld . IDG Publications . 12 . 13 . 1, 8 . Google Books.
55. Book: Mueller, Scott . 1994 . Upgrading and Repairing PCs . Que . 1128–1129 . 4th . 9781565299320 . the Internet Archive.
56. Feil . Stuart . October 5, 1987 . Compaq adds new '386 PC arch . Electronic News . Sage Publications . 33 . 15 et seq. . Gale.
57. Web site: IBM PS/2 53 486SLC2 (9553-0B7 and 0BB), IBM PS/2 53LS 486SLC2 (9553-1BX and 2BX) Announcement Letter. International Business Machines Corporation. September 28, 2021. https://web.archive.org/web/20140911075256/http://ps-2.kev009.com/basil.holloway/ALL%20TXT/193-350.txt. September 11, 2014. Kevin Bowling.
58. September 28, 1992 . New PCs: new IBM PS/2s . EDGE . EDGE Publishing . 3 . 123 . 11 . Gale.
59. Web site: IBM PS/2 (Model 56 SLC2) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
60. Book: May 1995 . Personal Systems Reference – IBM PS/2 1992 to 1995 – withdrawn . International Business Machines Corporation .
61. Book: Mueller, Scott . 1994 . Upgrading and Repairing PCs . Que . 1208–1209 . 4th . 9781565299320 . the Internet Archive.
62. Book: Hoskins, Jim . 1994 . IBM Personal Systems . Wiley . 10 . 9780471599302 . the Internet Archive.
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64. Web site: IBM PS/2 56 and 57 486SLC2, PS/2 Ultimedia M57 and Ultimedia DV M57 486SLC2 Announcement Letter. September 21, 1992. International Business Machines Corporation. https://web.archive.org/web/20210928235406/https://www.ibm.com/common/ssi/cgi-bin/ssialias?htmlfid=897%2FENUS192-222&infotype=AN&subtype=CA&appname=skmwww. September 28, 2021. September 28, 2021.
65. Web site: IBM PS/2 (Model 57 SLC2) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
66. Web site: September 7, 2016. IBM Hardware Export Classification Lookup Tool – Search Results – 466201–466250 of 468,275 results . International Business Machines Corporation . https://archive.today/20231021155101/https://www-50.ibm.com/products/exporting/hwclass/results.wss?eccnId=ALL&eroId=ALL&page=9325&n=50 . October 21, 2023.
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68. Web site: IBM PS/2 (Model 77) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
69. Web site: IBM PS/2 (Model 90 XP 486) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
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72. Web site: IBM PS/2 (Model 95 XP 486) – Technical Specifications. International Business Machines Corporation. Ardent Tool. 2000. September 28, 2021.
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