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Amazon.com: Dell OptiPlex Computer Desktop PC, Intel Core i5 3rd Gen 3.2 GHz, 16GB RAM, 2TB HDD, MTG, 22 Inch LED Monitor, RGB Keyboard and Mouse, WiFi, Windows 10 Pro (Renewed) : Electronics
8GB 4X2GB Dell OptiPlex 755 Series Desktop/PC DDR2 PC2-5300 RAM Memory at Amazon.com
Amazon.co.jp: Used PC Desktop Dell OptiPlex 7050 SFF Core i7 6700 3.40GHz 16GB Memory 1TB S Multi Windows 10 Pro 64bit Built-in 30 Days Warranty (Refurbished) : Computers