4GB kit (2GBx2) DDR2 PC2-6400 LAPTOP Memory Modules (200-pin SODIMM, 800MHz) Genuine StarGalaxy Brand Type: 200-Pin DDR2 SO-DIMM Capacity: 4GB (2 x 2GB) Speed: DDR2 800MHz (PC2-6400) Timings: CL 6 Voltage: 1.8V