AIM Compatible Replacement - HP 128MB Memory (C9121A) - Generic Product Sort: Printer Accessories Product Type: Memory Compatibility: Works In HP LaserJet 1320 / HP LaserJet 2300 / HP LaserJet 2500 / HP LaserJet 2550 / HP LaserJet 4100 / HP LaserJet 4200 / HP LaserJet 4300 / HP 5100 / HP LaserJet 9000 / HP LaserJet 9055MFP / HP LaserJet 9065MFP Series Laser Machines Weight: 8 Parts: 30 DAYS Labor: 30 DAYS