ProLiant DL580 G4 2GB PC2-3200 DDR2 Memory Compaq ProLiant DL580 G4 RAM -2Gb DDR2 Dual Rank PC3200 ECC Registered Memory upgrade. 2GB 240pin DDR2 DIMM 256Mx72 ECC Registered with ChipKill Support gold leads 1.8 volts PC2-3200. Please Order Qty 2 for a kit/ Dual Channel use.