HP 615863-001 2GB, DDR3-667MHz Memory Module at Amazon.com
RMN1150EG38D6F 512MB 1Rx8 DDR2 SO-DIMM PC2-5300 667MHz 200-Pin Non-ECC CL5 1.8V Laptop Memory Module RMN1150EG38D6F-667 Compatible Replacement Spare Part for Ramaxel Compatible and Other Systems at Amazon.com
Kingston ValueRAM 4GB 667MHz DDR2 ECC CL5 DIMM (Kit of 2) Desktop Memory at Amazon.com
Transcend JM667QLU-2G 2GB JetRam DDR2 667 U-DIMM at Amazon.com
HP 16GB 2X 8GB PC2-5300 DDR2-667 2Rx4 ECC Fully Buffered FBDIMM Memory Kit (HP PN# 413015-B21) at Amazon.com