Amazon.com: Dell OptiPlex 3020 MT Desktop PC - Intel Core i5 3.2GHz Quad Core - 4GB RAM - 500GB 7200RPM HDD - DVD Writer - Win 7 Pro (Pre-installed ) - No Monitor : Electronics
Dell Optiplex 3020 Upgrade RAM, Video Card, Hard Drive Install Change Replace - YouTube
16GB RAM for OptiPlex 3020 Micro - Dell Community
Dell Optiplex 3020 Tower Computer PC, 3.20 GHz Intel i5 Quad Core Gen 4, 8GB DDR3 RAM, 500GB Hard Disk Drive (HDD) SATA Hard Drive, Windows 10 Home 64bit (Renewed) | StackSocial
4GB Memory for Dell Optiplex 3020 Micro DDR3L 1600MHz SODIMM RAM (PARTS-QUICK Brand) at Amazon.com