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Restored DELL Optiplex 990 Tower Computer PC, Intel Quad-Core i7, 512GB SSD, 12GB DDR3 RAM, Windows 10 Pro, DVW, WIFI (Refurbished) - Walmart.com
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OptiPlex 990 Small Form Factor (SFF) Removal Guide for the Memory, Fan Shelter, System fan, Power Switch Cable and Coin Cell Battery | Dell US
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