C3146A 16MB 72pin FP SIMM Memory Upgrade for HP LaserJet 4+ 4M+, 4V, 4MV, 5. 5Si, 5P, 5MP, 6P, 6MP One 16MB 72pin 70ns FP SIMM Part#: C3146A 100% Compatible with Lifetime Warranty Manufactured by Keystron, LLC Keystron is a registered trademark of Keystron, LLC