I ordered and paid for a Dell Optiplex 990 and received a Dell Optiplex 790. I didn't notice till the integrated graphics failed and I needed to replace the video card. When Amazon got them on the phone to discuss the issue, they hung up on me. Amazon emailed them for a response, but they ignored it. On top of that, the PCIe slots did not line up with the slots on the frame, so I had to rig the replacement video card to fit and could not secure it because of the angle to the opening!