Kingston Technology 1GB (1x1 GB) 667MHz DDR2 PC2 5300 240-Pin ECC DIMM Memory for Select Dell Workstations KTD-DM8400BE/1G One 1GB Module of 667MHZ DDR2 ECC Memory for Dell A0515205 (Dell); A0515356 (Dell); A0690294 (Dell) Backed by a lifetime warranty and free technical support From the industry leader in PC memory Designed and tested for compatibility in various devices