Dell Optiplex 780 SFF Desktop Intel Duo Core 3.16GHz 4GB RAM TESTED NO HDD/OS | eBay
Dell OptiPlex 780 SFF Core2Duo 4GB RAM 160 GB HDD DVDRW w/ LINUX MINT | eBay
OptiPlex 780 Ultra Small Form Factor(USFF) Removal Guide for the Memory, System Fan, Heatsink, Intrusion Switch and Power Supply | Dell US
Restored Dell OptiPlex 780 SFF Desktop PC with Intel Core 2 Duo Processor, 4GB Memory, 250GB Hard Drive and Windows 10 Pro (Monitor Not Included) (Refurbished) - Walmart.com