This is a Grade A HP EliteDesk 800 G1 SFF Desktop Computer, featuring an Intel i5-4570 3.20GHz, with 4GB of RAM, a 1000GB Hard Drive, and a Windows 10 Home Operating System. This machine is fully refurbished and will offer you years of computing, backed by our 90-Day Warranty! These units are retail ready including a new, licensed through Microsoft Operating System, a power cord or AC Adapter, and keyboard/mouse so you are ready to go out of the box (third-party/aftermaret new or OEM used). Each unit has been subjected to rigorous functionality testing before they leave our facility, they will offer you years of computing. This is backed by our 90-Day Warranty for full functionality! Units may have been cosmetically rejuvenated, but may have subtle signs of being preloved may exist.