Dell Optiplex 780 Desktop PC Core 2 Quad 2.66GHz 2GB RAM NO HDD NO OS | #1792127549
Refurbished: Dell OptiPlex 780 USFF Desktop Intel Core 2 Duo E8400 3.0GHz 4GB DDR3 RAM 250 GB HD DVD-RW WiFi Bluetooth Microsoft Windows 10 Pro - Newegg.com
Dell OptiPlex 780 MT Intel Core 2 Duo E8400 3.00GHz 4GB RAM NO HDD NO OS | eBay
Dell Optiplex 780 Desktop PC Core 2 QUAD 2.66GHz 4GB RAM 250GB HDD (NO OS) | eBay