KTH-XW4300/2G Kingston 2GB PC2-5300 DDR2-667MHz non-ECC Unbuffered CL5 240-Pin DIMM Dual Rank Memory Module for HP/Compaq Manufacturer: KingstonManufacturer Part # KTH-XW4300/2GMemory Type DDR2 SDRAMCapacity 2GBData Transfer Rate 667MhzPins 240 PinBus Type PC-5300Error Correction Non-ECCCycle Time 6nsCas CL5Memory Clock 166MhzVoltage 1.8