Restored Dell OptiPlex 390-T Desktop PC with Intel Core i5-2400 Processor, 8GB Memory, 500GB Hard Drive and Windows 10 Home (Monitor Not Included) (Refurbished) - Walmart.com
2GB DDR3 240-Pin Memory RAM Upgrade for Dell Optiplex 390 790 990 Computer PC | eBay
Refurbished optiplex 390. Turns on but no display - Dell Community
Dell OptiPlex 390 DT vs. Dell OptiPlex 990 DT Comparison
Dell OptiPlex 390 Desktop PC, 3.2GHz Intel i5 Quad Core Gen 2, 8GB RAM, 2TB SATA HD, Windows 10 Professional 64 bit (Renewed) | StackSocial
OFFTEK 4GB Replacement Memory RAM Upgrade for Dell OptiPlex 390 (Desktop) (DDR3-10600 - Non-ECC) Desktop Memory at Amazon.com