Amazon.com: Ptcliss 240W Watt Desktop Power Supply Unit PSU for Dell Optiplex 390 790 990 960 7010 9010 3010 Small Form Factor System SFF H240AS-00 H240AS-01 D240ES-00 H240ES-00 L240AS-00 3WN11 PH3C2 2TXYM 709MT : Electronics
Amazon.com: Dell Optiplex 390 Business High Performance SFF Desktop Computer PC (Intel Quad-Core i5-2400 up to 3.4GHz, 8GB DDR3, 1TB HDD, HDMI, DVD, Windows 10 Pro 64-bit) (Renewed) : Electronics
Amazon.com: Dell Optiplex 390 SFF Desktop - Intel Core i5-2400 3.1GHz 8GB 250GB DVD Windows 10 Profesional (Renewed) : Electronics
Amazon.com: Dell Optiplex 390 Desktop PC - Intel Core i3-2120 3.3GHz 8GB 1.0TB DVDRW Windows 10 Pro (Renewed) : Electronics
Amazon.com: Dell Optiplex 390 Desktop Computer, Intel i7-2600 Upto 3.8GHz, 8GB RAM, 1TB SSD, VGA, HDMI, DVD, AC Wi-Fi, Bluetooth - Windows 10 Pro (RENEWED) : Electronics
Amazon.com: 2018 DELL OPTIPLEX 390 SFF Desktop Computer, Intel Core I3 2100 3.1GHz, 8GB DDR3, 120GB SSD, DVD, WIFI, HDMI, VGA, Bluetooth 4.0, Windows 10 Professional 64 Bit (Renewed) : Electronics
OFFTEK 4GB Replacement Memory RAM Upgrade for Dell OptiPlex 390 (Desktop) (DDR3-10600 - Non-ECC) Desktop Memory at Amazon.com
Amazon.com: Dell Optiplex 390 Business High Performance SFF Desktop Computer PC (Intel Quad-Core i5-2400 up to 3.4GHz, 8GB DDR3, 1TB HDD, HDMI, DVD, Windows 10 Pro 64-bit) (Renewed) : Electronics
Amazon.com: DELL OPTIPLEX 390 DT Desktop Computer, Intel Core I3-2100 3.1GHz, 8GB DDR3, 1TB, DVD, WIFI, HDMI, VGA, Bluetooth 4.0, Windows 10 Professional 64 Bit (Renewed) : Electronics
Restored Dell Optiplex 390 Desktop PC Tower System Intel 3.1GHz Processor 4GB Ram 500GB Hard Drive DVDRW Windows 10 Home Premium with 22" Dual Screen Dell LCD's Computer (Refurbished) - Walmart.com