Dell Optiplex 390 Upgrade RAM, SSD, DVD Drive - YouTube
OFFTEK 4GB Memoria RAM di ricambio per Dell OptiPlex 390 (Desktop) (DDR3-10600 - Non-ECC) Memoria Desktop : Amazon.it: Informatica
Jordis Computer Import - Dell OptiPlex 390 Desktop PC Intel 2nd Gen. Dual Core i3-2100 3.10GHz CPU 4 GB DDR3 RAM, 250 GB Hard Drive, DVD-RW Microsoft Windows 10 Home 64-Bit VGA/HDMI