AddOn - Memory Upgrades 2GB Panasonic Comp DDR2 200PIN SODIMM Cas Latency: 5 Voltage: 1.8V ECC: No Buffered/Registered: Unbuffered Heat Spreader: No Features: This Panasonic CF-WMBA602G compatible 2GB DDR2-667MHz Dual Rank Unbuffered 1.8V 200-pin CL5 SODIMM is 100% guaranteed to be compatible with your system and to work right the first time