The HP LaserJet 2400 series was a line of grayscale laser printers sold by Hewlett-Packard. The printer was aimed at small and medium business use. It was the successor to the HP LaserJet 2300 series, and was in turn replaced by the HP LaserJet P3000 series.
The HP LaserJet 2400 series consists of the following models:
The letters at the end of the model have the following meaning:
Models that have multiple letters will have all the options for those letters. For example, the LaserJet 2430dtn has a duplexer, and extra tray and an internal 10/100 Ethernet JetDirect card.