Dell Optiplex 745 Ultra Small Form Factor RAM Replacement - iFixit Repair Guide
8GB (4X2GB) DDR2 PC2-6400U Memory For Dell Optiplex 745, 745C Series Desktop RAM | eBay
8GB (4x2GB RAM Memory Compatible with Dell OptiPlex 745, 745c Series Desktop A92 | eBay
Best Buy: CMS 2GB (1GB X 2 ) RAM Memory Upgrade 4 Dell OptiPlex 745 Desktop CM1286453008x2DIMM010
Restored Dell Optiplex 745 Small Form Factor Desktop PC with Intel Core 2 Duo Processor, 4GB Memory, 80GB Hard Drive and Windows 10 Home (Monitor Not Included) (Refurbished) - Walmart.com
Dell Optiplex 745 Ultra Small Form Factor RAM Replacement - iFixit Repair Guide
CMS 4GB (2X2GB) DDR2 5300 667MHZ Non ECC DIMM Memory Ram Upgrade Dimm Compatible with The Dell® Optiplex 745 Desktop Memory Ram Upgrade - A88 at Amazon.com