2GB DDR2 800MHz 4GB 2Rx8 PC2-6400U 4G PC2 5300 NON ECC RAM for DELL Precision WorkStation 390 T3400 380 Extreme Edition Desktops _ - AliExpress Mobile
Dell OptiPlex 390 MT Intel Core i5-2310 2.90GHz CPU 4GB RAM No HDD No
Dell Precision T3400 Tower Workstation, 8GB, 1TB Windows 10 Pro and WIFI
Dell Precision Workstation 390 T Desktop Computer Intel Dual Core 3.0GHz 8GB RAM 1TB HD DVD-RW Keyboard and Mouse Windows 10 Pro 22" LCD - Refurbished PC - Walmart.com
Refurbished optiplex 390. Turns on but no display - Dell Community
Dell Precision Workstation 390 T Desktop Computer Intel Dual Core 3.0GHz 8GB RAM 1TB HD DVD-RW Keyboard and Mouse Windows 10 Pro 22" LCD - Refurbished PC - Walmart.com
Dell Precision 390 Core 2 Duo 1.8 GHz - HDD 80 GB RAM 2GB | Back Market