Restored Dell OptiPlex 780 Tower Desktop PC with Intel Core 2 Duo Processor, 4GB Memory, 250GB Hard Drive and Windows 10 Pro (Monitor Not Included) (Refurbished) - Walmart.com
Refurbished: Dell OptiPlex 780 USFF Desktop Intel Core 2 Duo E8400 3.0GHz 4GB DDR3 RAM 250 GB HD DVD-RW WiFi Bluetooth Microsoft Windows 7 - Newegg.com
Amazon.com: Dell Optiplex 780 Desktop Intel Core 2 Duo 3.0GHz 8GB RAM 500GB HDD DVD-ROM Windows 10 Home 19in Display Keyboard Mouse Speaker WiFi (Renewed) : Electronics
Dell OptiPlex 780 USFF Desktop Core 2 Duo (E8500)
Dell Optiplex 780 SFF | Second Source Computers
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