16gb (2x8gb) Memory RAM Compatible With Dell Optiplex 3020 Desktop A63 for sale online | eBay
CMS 16GB (2X8GB) DDR3 12800 1600MHz Non ECC DIMM Memory Ram Upgrade Compatible with Dell® Optiplex 3020 Mt/Sff - A63 at Amazon.com
Dell OptiPlex 3020 Small Form Desktop Computer PC, 3.20 GHz Intel i5 Quad Core Gen 4, 4GB DDR3 RAM, 2TB Hard Disk Drive (HDD) SATA Hard Drive, Windows 10 Home 64bit - Walmart.com
A-Tech 4GB Memory RAM for Dell OptiPlex 3020 - DDR3 1600MHz PC3-12800 Non ECC DIMM 1Rx8 1.5V - Single Desktop Upgrade Module (Replacement for SNP531R8C/4G) at Amazon.com