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Dell OptiPlex 990 Mini Tower Computer i7-2600 - A
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Dell OptiPlex 990 SFF Computer i3-2120 Windows 10 - Grade A
Dell Optiplex 990 Small Form Factor i3-2100 3.1GHz 8GB DDR3 (500GB HD) Win 10 Pr | eBay
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Dell OptiPlex 990 Desktop Computer PC, 3.10 GHz Intel Core i3, 8GB DDR3 RAM, 250GB Hard Disk Drive (HDD) SATA Hard Drive, Windows 10 Home 64bit (Renewed) | New Atlas
Refurbished: Dell Optiplex 990 Small Form Factor, Intel Core i7-2600 3.4Ghz Quad Core Processor, 8GB Memory, 1TB Hard Drive, Intel HD Graphics 2000, Windows 7 Professional, Keyboard and Mouse - Newegg.com