SOLVED] - Dell OptiPlex 390 DT Fan Upgrades? | Tom's Hardware Forum
Dell Optiplex 390 - What's my upgrade path? : r/buildapc
Solved: 390, CPU upgrades? - Dell Community
Solved: 390, CPU upgrade - Dell Community
Dell OptiPlex 390 SFF Desktop PC with Intel Core i5-2400 Processor, 8GB Memory, 500GB Hard Drive DVD Wi-Fi and Windows 10 Pro Refurbished Computer - Walmart.com
Inspiron 620, 2nd gen i7-2600 upgrade? - Dell Community
Solved: 390, CPU upgrades? - Dell Community
Solved: CPU UPGRADE - Dell Community
Dell OptiPlex 390 SFF Computer i3-2120 Windows 10 - Grade A
Refurbished Dell OptiPlex 390-T Desktop PC with Intel Core i5-2400 Processor, 8GB Memory, 2TB Hard Drive and Windows 10 Pro (Monitor Not Included) - Walmart.com
Dell OptiPlex 390 SFF – Specs and upgrade options
Dell Optiplex 390 Windows 10 Pro Desktop PC Tower Core i3 3.1GHz Processor 8GB RAM 1TB Hard Drive DVD-RW Wifi with a 19" LCD-Refurbished Computer - Walmart.com