Amazon.com: Dell Optiplex 790 PC Desktop Computer - Quad Core i5 2400 3.10 GHz, 16GB DDR3, 500GB HDD - Keyboard, Mouse, WiFi, Windows 10 Professional (64-bit)(Renewed) : Electronics
Amazon.com: DELL Optiplex 790 High Performance Desktop Computer MiniTower, Intel Core i5-2400 Processor up to 3.4GHz, 8GB RAM, 2TB HDD + 120GB SSD, DVD, WiFi, Windows 10 Pro 64 bit (Renewed)'] : Electronics
Amazon.com: Dell Optiplex 390 SFF Desktop - Intel Core i5-2400 3.1GHz 4GB 250GB DVDRW Windows 10 Professional (Renewed) : Electronics
Amazon.com: Dell Optiplex 990 Workstation, Intel Core i5-2400 3.1 GHz,16GB RAM, 2TB SATA Hard Disk Drive, DVD-RW, Windows 10 Home, (Renewed) : Electronics
Amazon.com: Dell Optiplex High Performance Business Desktop Computer, Intel Core i5-2400 Processor up to 3.1GHz, 8GB RAM, 1TB HDD, DVD, Windows 10 Pro 64 bit (Renewed) : Electronics