Crucial 2GB Kit (1GBx2) DDR2 667MHz (PC2-5300) CL5 SODIMM 200-Pin Notebook Memory Modules CT2KIT12864AC667 Install it yourself in about 15 minutes. The only brand of memory upgrade available directly from a DRAM manufacturer Includes DDR2-667 200-pin SODIMM DDR2 PC2-5300 Unbuffered, NON-ECC, DDR2-667, 1.8V, 128Meg x 64 Density: 2GB kit (1GBx2) 200-pin SODIMM 200-pin SODIMMs are used to provide DDR and DDR2 SDRAM memory for notebook computers Capacity: 2GB kit (1GBx2) Specs: DDR2 PC2-5300, CL=5, Unbuffered NON-ECC, DDR2-667, 1.8V, 128Meg x 64 Increases system performance, you can install it yourself in 15 minutes