This Tech Magnet Zeus Pro 6 desktop computer has higher quality components than you'll find in typical off the shelf retail models this Computer is ready to use straight out of the box. It has gone through a thorough and rigorous process as well as Quality Control Testing. First, we erased all the previously stored data according to DOD standards. Then, we replaced any failing or bad hardware including the hard drive, memory, and capacitors. We have verified that all the ports and connectors are in proper working order. SAVE TIME with the freshly installed digital product key for Windows 10 Pro operating system. No more keying in 25 tiny, hard to see, characters or loading time to activate. It will automatically activate once GB dedicated graphic cards included for best performance the license agreement is accepted with the click of a mouse! Perfect for business, entertainment, content creation, scientific research, gaming, home, school, education, or use for cloud/datacenter - This Desktop computer will take you there!