343057-B21 4GB Kit 2 x 2GB Memory for HP ProLiant DL140 G2 PC2-3200R ECC Registered DDR2-400 240 pin 1.8v DIMM (PARTS-QUICK BRAND) at Amazon.com
4AllDeals 1GB Memory RAM Upgrade for The Dell OptiPlex GX620 Desktop, Mini Tower, Small Form Factor and Ultra Small Form Factor (DDR2-400, PC2-3200) at Amazon.com