Solved: Optiplex 3020, ram upgrade - Dell Community
A-Tech 8GB Memory RAM for Dell OptiPlex 3020 SFF - DDR3 1600MHz PC3-12800 Non ECC DIMM 2Rx8 1.5V - Single Desktop Upgrade Module (Replacement for A6994446) at Amazon.com
Dell Optiplex 3020 SFF Computer PC, Intel Core i3-4130 3.4Ghz, 8GB RAM, 500GB SATA HDD, DVD Windows 10, includes 19" LCD, keyboard, and mouse, 1 year warranty - Walmart.com
Dell Optiplex 3020 SFF Small Form Factor i5 Desktop PC | WJMTech | Reviews on Judge.me