Restored Dell Optiplex 3020 Desktop Tower Computer, Intel Core i3, 4GB RAM, 320GB HD, DVD-ROM, Windows 10 Home 64Bit, Black (Refurbished) - Walmart.com
Dell Optiplex 3020 Intel Pentium G3250|$ 125.00
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
16GB RAM for OptiPlex 3020 Micro - Dell Community
Dell OptiPlex 3020 PC Computer i5-4570 3.20GHz 4GB RAM 500GB HD Windows 10 Pro | eBay
Dell OptiPlex Computer Windows-10 Pro|$ 119.99
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