HP C9121A Q9121A Q7709A Q7709AX 128MB 100 pin SDRAM MEMORY DIMM for HP LaserJet 1320 1320n 1320t 1320tn 1320nw One 128MB PC100 100-pin sodimm Part#: C9121A, Q9121A, Q7709A 100% compatible with lifetime replacement warranty Manufactured by Keystron, LLC Keystron is a registered trademark of Keystron, LLC