x2GB Manufacturers Part Number KTH-XW667LP/4G Memory Standard DDR2-667/PC2-5300 ECC Fully Buffered Brand Kingston Memory Technology DDR2 SDRAM Memory Size 4GB Total Form Factor DIMM Memory Speed 667 MHz Number Of Modules 2 Number Of Pin 240......... Compatible with HP ProLiant BL20p G4, BL25p G2, BL460c, BL480c, BL680c G5, DL140 G3, DL160 G5, DL160 G5 1TB SATA Storage Server, DL160 G5 640GB SATA Storage Server, DL160 G5 Storage Server, DL180, DL360 G5, DL360 G5 Base, DL360 G5 Entry.