Q2632A Q7723A 512MB Memory Upgrade for HP Color LaserJet 3000dn, 3000n, 3800, 3800dn, 3800dtn, 3800n One 512MB 200pin DDR Sodimm Part#: Q2632A, Q7723A 100% Compatible with Lifetime Warranty Manufactured by Keystron, LLC Keystron is a registered trademark of Keystron, LLC