Refurbished: Dell OptiPlex 790 Mini Tower Desktop Intel Quad Core i5 3.10GHz 4GB DDR3 RAM 320GB HD DVD-RW Microsoft Windows 7 Professional 64-Bit - Newegg.com
DELL Optiplex 790 Tower Computer PC, Intel Quad-Core i5, 250GB HDD, 8GB DDR3 RAM, Windows 10 Home, DVD, WIFI, 22in Monitor, USB Keyboard and Mouse (Used - Like New) - Walmart.com
Dell Optiplex 790 Tower Computer PC, 3.20 GHz Intel i5 Quad Core Gen 2, 4GB DDR3 RAM, 500GB SATA Hard Drive, Windows 10 Home 64bit (Renewed) | StackSocial
Amazon.com: Dell OptiPlex 790 Desktop PC - Intel Core i5-2400 3.1GHz 8GB 1TB DVDRW Windows 10 Pro (Renewed) : Electronics
Refurbished Dell Optiplex 790 Small Form Factor - Eco Computer Co.