Restored Dell Optiplex 390 SFF PC - Intel Core i5 2400 2nd Gen 3.1 GHz 8GB 500GB HDD DVD-RW Windows 10 Pro 64-Bit (Refurbished) - Walmart.com
Dell OptiPlex 390 SFF – Specs and upgrade options
Dell OptiPlex 390 SFF Small Form Factor Motherboard DDR3 LGA 1155 F6X5P 0F6X5P | eBay
Amazon.com: Dell Optiplex 390 Desktop PC - Intel Core i3-2120 3.3GHz 8GB 1.0TB DVDRW Windows 10 Pro (Renewed) : Electronics
Restored Dell Optiplex 390-SFF WA1-0402 Desktop PC with Intel Core i5-2400 Processor, 4GB Memory, 1TB Hard Drive and Windows 10 Pro (Monitor Not Included) (Refurbished) - Walmart.com
Amazon.com: Replacement Motherboard for an Optiplex 390 SFF System Board F6X5P : Electronics
Solved: Motherboard model numbers vs. part numbers - Dell Community
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