C4140-67901 - HP 4MB SDRAM DIMM for LaserJet 4000 C4140-67901 - HP 4MB SDRAM DIMM for LaserJet 4000 $52.37
A3848-60001 - HP 8MB SDRAM DIMM Memory for LaserJet 4050 Printer A3848-60001 - HP 8MB SDRAM DIMM Memory for LaserJet 4050 Printer $40.00
A3521-60001 - HP 4MB 100-Pin SoDimm Memory for LaserJet 4000 / 5000 / 8000 / 8100 A3521-60001 - HP 4MB 100-Pin SoDimm Memory for LaserJet 4000 / 5000 / 8000 / 8100 $52.37