JSM Computers delivered as promised. Nice clean Optiplex 9020. No dust inside.I followed the enclosed instructions(do not connect to the internet)and did not have any bootup issues.The RAM installed were all Micron brand. The 1TB SSD was a LEVEN JS600.I only wish that the USB Wifi was dual band. The one supplied was 2.4 Ghz only.I cannot comment on Customer Support cuz I did not need to call the supplied 800 number.I would not hesitate to purchase another pc from JSM Computers.