Purchased from US Tecno.Negatives: Absolutely no setup instruction. Arrived with usb 3.0 ports turned off. I thought they were broke. Left phone message with US Tecno support but they never called back. It took me a while to trouble shoot and discovered the computer was shipped with those ports turned off. They now work fine.Positives: No issues with setup, went smoothly. Was able to setup Windows without a lot of junk software installed. Boots and shuts down very fast. Continues to work after five boot cycles and uses. Good value for users with some computer experience.