KTH-XW4200AN/512 Kingston 512MB PC2-4200 DDR2-533MHz non-ECC Unbuffered CL4 240-Pin DIMM Memory Module for HP/Compaq 382509-001, 393393-001, PV560AAManufacturer KingstonManufacturer Part # KTH-XW4200AN/512Memory Type DDR2 SDRAMCapacity 512MBData Transfer Rate 533MhzPins 240 PinBus Type PC-4200Error Correction Non-ECCCycle Time 7.5nsCas CL4Memory Clock 133MhzVoltage 1.8