It used to be that you could just buy any laser printer and be confident that your AS/400 would be able to print to it. Unfortunately that is no longer the case. Before buying a printer go to the following LINK and find the manufacturer of the printer you are considering. Click on the manufacturer's link and scroll down to find the printer model. You should verify that the printer model you are considering resembles the following entry:

Printers	Printer Data Stream	Host- Based	PDT File for PC5250	MFRTYPMDL for HPT	LPR	PJL	SNMP	IPP
HP LaserJet 4 HP LaserJet 4 Plus HP LaserJet 4M HP LaserJet 4M Plus	HP PCL5e	N	HPLJ4.PDT	*HP4 (This field can contain any value other than n/a.)	Y	Y	N	N