PC tower Dell OptiPlex 390 MT i3-2120 RAM GB disk TB HDMI Windows 10 Wifi - AliExpress Computer & Office
Amazon.com: Dell OptiPlex 390-SFF, Core i5-2400 3.1GHz, 8GB RAM, 240GB Solid State Drive, DVDRW, Windows 10 Pro 64bit, (Renewed) : Electronics
Dell Optiplex 390 MT Intel Core i3-2100, 4GB RAM, 120GB SSD, Windows 10 Pro | eBay
CMS 8GB (2X4GB) DDR3 10600 1333MHZ Non ECC DIMM Memory Ram Upgrade Compatible with Dell® Optiplex 390 Ddr3 Dimm - A69 at Amazon.com
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OFFTEK 4GB Replacement Memory RAM Upgrade for Dell OptiPlex 390 (Desktop) (DDR3-10600 - Non-ECC) Desktop Memory at Amazon.com
Dell Optiplex 390 Desktop | Intel i5 Processor | 4GB RAM | 250GB HDD | WIFI | Windows 10 Pro
Refurbished: Dell OptiPlex 390 Desktop Computer PC, 3.20 GHz Intel i5 Quad Core Gen 2, 8GB DDR3 RAM, 240GB Solid State Drive Hard Drive, Windows 10 Home 64bit - Newegg.com