Kingston 4GB 1600MHz SODIMM DDR3 1600 Memory Module for HP (PC3 12800) KTH-X3C/4G SODIMM 204-pin - DDR3 - 1600 MHz / PC3-12800 - CL11 unbuffered - non-ECC - for ProBook 4XXX, 5330m, 6360b, 6460b, 6465b, 6560b, 6565b; EliteBook 2560p, 2760p, 8X60p, 8460w, 8560w, 8760w