If you need a good used machine for work or home I could find no better value. Compact design, a fast processor, plenty of ram and ssd storage make this a very zippy unit.I had a minor problem that was quickly resolved.  I think during shipment, a wire shifted and was touching the case / power supply fan. Upon first boot I received a warning about the case fan and an option to run the Dell diagnostic. About midway through the stress test the power supply began to overheat because no fan was blowing. I phoned the seller and described the problem. No hassle or 20 questions. Cardiff in tech support was very courteous and at my request, immediately sent a replacement power supply. Because the Optiplex 9020 is a genius layout inside, a YouTube video and 15 minutes later the part was in.I don't blame the seller. Things like this can happen. I do credit the seller with fast response and followup emails to confirm my satisfaction.