What size is the Dell Optiplex 790 motherboard? - Quora
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Dell Optiplex 790 SFF Windows 10 Desktop Computer PC Quad Core i5 3.1GHz 8GB 80GB SSD 19" LCD Keyboard Mouse and Wifi Adapter
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Amazon.com: Dell D28YY Optiplex 790 Sff Motherboard Used : Electronics
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Opti 790 Tech Guidebook v2.1.pub
Dell Optiplex 790 Ultra Small Form Factor Desktop Computer PC, 3.00 GHz Intel Intel Core i5, 8GB DDR3 RAM, 250GB SATA Hard Drive, Windows 10 Professional 64 bit (Used) - Walmart.com