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
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Amazon.com: Dell Optiplex 780 Desktop, Intel Core 2 Duo Processor, 4GB RAM, 160GB Hard Drive, DVD, Keyboard & Mouse, Wi-Fi, Windows 10, 17-inch LCD Monitor (Brand May Vary) (Renewed) : Electronics
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