Our DELL compatible modules meet or exceed the quality of a DELL Original Module and is Guaranteed 100% for Compatability or your money back. DELL Part# 311-3585 512MB PC2-3200 ECC REGISTERED KIT $60.00 DELL Part# 311-3586 1GB PC2-3200 ECC REGISTERED KIT $115.00 DELL Part# 311-3590 2GB PC2-3200 ECC REGISTERED KIT $210.00 DELL Part# 311-3593 4GB PC2-3200 ECC REGISTERED KIT $421.00 DELL Part# 311-3742 256MB PC2-4200 DDR2 SO-DIMM $25.00 DELL Part# 311-3743 512MB PC2-4200 DDR2 SO-DIMM $49.00 DELL Part# 311-3761 512MB PC2-4200 533MHz Dual-Channel Kit $50.00 DELL Part# 311-3766 1GB PC2-4200 533MHz Dual Channel Kit $95.00 DELL Part# 311-3771 2GB PC2-4200 533MHz Dual Channel Kit $180.00 DELL Part# A0395461 Compatible 512MB DDR2 SDRAM DIMM $40.00 DELL Part# A0407424 1GB PC2-4200 DDR2 SO-DIMM $98.00 DELL Part# A0377943 Compatible 1GB DD2 PC2-3200 ECC REGISTERED $112.00 DELL Part# A0455476 - A0455471 Compatible 2GB PC2-3200 DDR2 ECC REGISTERED DIMM $298.00 DELL Part# DX1564 Compatible 4GB PC2-3200 DDR2 ECC REGISTERED DIMM $1,250.00 DELL Part# DX1563 Compatible 2GB PC2-3200 DDR2 ECC REGISTERED DIMM $450.00