Kingston Technology 4GB Kit (2x2GB) 667MHz DDR2 SDRAM Memory for Fujitsu (KFJ-BX667K2/4G) at Amazon.com
Axiom Memory Solutionlc 4gb Low Power Ddr2-667 Ecc Rdimm Kit (2 X 2gb) Taa Compliant at Amazon.com
4GB 2 X 2GB PC2-5300F 667MHz 240 pin DDR2 SDRAM ECC Fully Buffered FB DIMM Server Low Power Memory for HP ProLiant xw460c Blade Workstation (PARTS-QUICK BRAND). Equivalent to HP Part Numbers: