2GB RAM Memory for Dell OptiPlex 380 Small Form Factor (SFF) 240pin PC3-10600 DDR3 DIMM 1333MHz Black Diamond Memory Module Upgrade - Walmart.com
4GB Stick for Dell Optiplex 380 780. DIMM DDR3 Non-ECC PC3-8500 1066MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com
Restored Dell Optiplex 380 Small Form Factor Desktop PC with Intel Core 2 Duo 4GB RAM 160GB HDD and Win 10 Pro (Monitor not included) (Refurbished) - Walmart.com
PC Refurbished Dell Optiplex 380 MT, Core 2 Quad Q8300, Win 10 Home