Refurbished: Dell OptiPlex 780 USFF Desktop Intel Core 2 Duo E8400 3.0GHz 4GB DDR3 RAM 250GB HD DVD-RW WiFi Bluetooth Microsoft Windows 7 Professional 64-Bit - Newegg.com
Dell Optiplex 780 Windows 10 Pro Desktop PC Tower Core 2 Duo 3.0GHz Processor 8GB RAM 500GB Hard Drive DVD-RW Wifi with a 22" LCD-Refurbished Computer - Walmart.com
Refurbished: Dell OptiPlex 780 USFF Desktop Intel Core 2 Duo E8400 3.0GHz 4GB DDR3 RAM 250GB HD DVD-RW WiFi Bluetooth Microsoft Windows 7 Professional 64-Bit - Newegg.com
Amazon.com: Dell Optiplex 780 SFF Wifi Desktop PC Bundle - Intel Fast & Efficient Core 2 Duo @ 3.0ghz - 1TB Hard Drive - Loaded 16gb RAM - Windows 7 Professional 64-bit - Dual Video Output - 1 Year Warranty : Electronics