HP Q2627A Q7719A 256MB 100 pin DDR SDRAM DIMM for HP LaserJet 4350 4350n 4350tn 4350dtn 4350dtnsl Printer Memory 256MB 100pin DDR printer memory upgrade Part#: Q2627A, Q7719A 100% Compatible with Lifetime Warranty Manufactured by Keystron, LLC Keystron is a registered trademark of Keystron, LLC