Dell OptiPlex 780 USFF with 19" Monitor ,WiFi 650MB/s, 320GB HDD, 4GB RAM, USB Mouse & Keyboard, Windows 10 Pro. Used with 1 year Warranty. - Walmart.com
Dell Optiplex 780 SFF | Second Source Computers
Dell Optiplex 780 PC Desktop (Intel Core 2 Duo 2.80GHz 3GB 160GB Win 10) | eBay