Amazon.com: Dell OptiPlex 780 USFF Desktop Intel Core 2 Duo 3.0 GHz 4 GB RAM 250 GB HD DVD Win Pro 32-Bit (Renewed) : Electronics
Dell OptiPlex 3010 Mini Tower i5-3470, Choose your own specs | eBay
Amazon.com: Dell Optiplex 390 MiniTower PC - Intel Core i5-2400 3.1GHz 8GB 250GB DVDrw Windows 10 Pro (Renewed) : Electronics
Dell OptiPlex 780 Mini Tower Computer Core 2 Duo (E7500)
Dell Optiplex 780 USFF Computer Core 2 Duo (E8400) Windows
Specs DELL OptiPlex 780 MT Mini Tower Intel® Core™2 Duo E6700 2 GB DDR3-SDRAM 320 GB Intel® GMA X4500 Windows 7 Professional PC Black PCs/Workstations (OP780MT-E334)
Dell OptiPlex 780 Mid Tower Dual Core 3.00GHz 4GB DDR3 120GB SSD Windows 10 Pro *Reconditioned