512MB Memory Upgrade Kit 

• Part Number: Q2628A
• One 512MB PC2100 100-PIN DDR DIMM
• Compatible: Hewlett Packard LaserJet 2430, 2600dtn, M3035, M3035XS MFP, M4345, M4345X, M4345XM, M4345XS MFP, M5025 MFP, M5035x MFP, 5200, Color LaserJet 5200dtn, 5200tn, LaserJet 2410, 2420, 2420d, 2420dn, 2430dtn, 2430n, 2430tn, 4240, 4240n, 4240tn, 4250, 4250dtn, 4250dtnsl, 4250n, 4250tn, 4345, 4345mfp, 4345x, 4345xm, 4345xs, 4350, 4350n, 4350dtn, 4350dtnsl, 4350tn, 5200, 5200dtn, 9040MFP, 9050, 9050dn, 9050n, 9050MFP, M3027 MFP.