HP C7846A C3913A Q1887A C9680A 64MB Memory Upgrade 4 HP Laserjet 4000, 4000N, 4000se, 4000t, 4000tn, 4050, 4050n, 4050SE, 4050T, 4050TN, 4050USB-Mac, 5000, 5000DN, 5000GN, 5000LE, 5000N, 5000T One 64MB PC100 100-pin sodimm Part#: C7846A, C3913A, Q7708A 100% compatible with lifetime replacement warranty Manufactured by Keystron, LLC Keystron is a registered trademark of Keystron, LLC