HP Q2628A Q7720A 512MB 100 pin DDR SDRAM DIMM for HP LaserJet M3027 MFP, M3035, M3035XS MFP, M4345XS MFP, M5025 MFP, M5035x MFP Printer Memory (PARTS-QUICK) Form Factor: 100 pin Printer DIMM Warranty: Lifetime Capacity: 512MB