The first computer sent was a Dell Optiplex 990 Desktop Computer, i7 upto 3.8GHz CPU, 16GB DDR3 Memory, New 512GB SSD, WiFi, Windows 10 Pro (Renewed), worked great, but had fan issues.  They offered to replace the computer.  I paid $25 to ship it back to them.  They then shipped me a OptiPlex 790, with a 2 TB 7200 RPM drive (not a 512 GB SSD), and an I5 processor (not a I7).  The tower itself is a mini tower, when we ordered a full tower.  Tried calling their support, and left a voicemail.  Hope to hear from them very soon.  I do not believe I should have to pay for any shipping back to them, as I am not the one at fault here.