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
Refurbished: DELL Desktop PC OptiPlex 780 Core 2 Duo 3.00GHz 4 GB 250GB HDD Windows 10 Pro 64-Bit - Newegg.com
Dell Optiplex 780 Windows 10 Pro Tower Computer PC 3.0GHz 8GB 250GB w/19" LCD and Dell Soundbar
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Dell Optiplex 780 Windows 10 Pro Desktop Computer PC 3.0GHz 8GB 250GB w/19" LCD | eBay
Restored Dell Optiplex 780-D WA1-0303 Desktop PC with Intel Core 2 Duo Processor, 4GB Memory, 320GB Hard Drive and Windows 10 Home (Monitor Not Included) (Refurbished) - Walmart.com
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Amazon.com: Dell Optiplex 780 SFF Desktop PC - Intel Core 2 Duo 3.0GHz 4GB 160GB Windows Pro (64bit) (Renewed) : Electronics
Dell Optiplex 780 Windows 7 Desktop Computer Tower 4GB DVD RW 15" LCD 208 GB | eBay
Amazon.com: Dell Optiplex 780 Desktop Business Computer PC (Intel Dual Core Processor up to 3.0GHz, 8GB DDR3 Memory, 500GB HDD, DVD Burner, Windows 10 Professional) (Renewed) : Electronics
Dell OptiPlex 780 Desktop Computer Windows 7 Pro Dual 19" Monitor Set – RefurbishedPC