Refurbished: DELL Optiplex 320 [Microsoft Authorized Recertified] Small Form Factor Desktop PC with Intel Pentium Dual Core 2.2GHz, 2GB RAM, 160GB HDD, DVD-CDRW, Windows 7 Home Premium 32-Bit Desktop Computers - Newegg.com
Dell 0UP453 UP453 Motherboard for OptiPlex 320 | eBay
2GB [2x1GB] DDR2-533 (PC2-4200) RAM Memory Upgrade Kit for The Dell Optiplex 320 Mini Tower (Genuine A-Tech Brand) at Amazon.com
2GB Team High Performance Memory RAM Upgrade Single Stick For Dell OptiPlex 320 320n 330 360 FX160. The Memory Kit comes with Life Time Warranty. at Amazon.com
Dell Optiplex 320 (DT), intel Dual Core, 4GB Ram, 500GB Hard Drive, 19" Monitor, Windows 10, 6 Month Warranty
How to Upgrade RAM on Dell Optiplex 320 · Share Your Repair