A-Tech 16GB (2 x 8GB) RAM for Lenovo THINKCENTRE M920 Tower | DDR4 2666MHz DIMM PC4-21300 288-Pin Non-ECC UDIMM Memory Upgrade Kit at Amazon.com
A-Tech 4GB (2 x 2GB) RAM for HP Compaq 4000 Pro & 6000 Pro - (Small Form Factor & Microtower) - DDR3 1066MHz PC3-8500 Non-ECC DIMM Memory Upgrade Kit at Amazon.com
parts-quick 8GB (2 X 4GB) Memory for Dell OptiPlex 960 DDR2 800MHz PC2-6400 240 pin Desktop DIMM RAM at Amazon.com
CMS 8GB (2X4GB) DDR3 12800 1600MHz Non ECC DIMM Memory Ram Upgrade Compatible with Dell® Optiplex 7010 - A71 at Amazon.com