Dell Optiplex 5050 SFF computer. Has an i5-7600 CPU @ 3.5 GHz, 8 GB RAM, This unit does not have a hard drive or SSD - it will accomodate either a SATA hard drive/SSD or an M.2 NVMe SSD. Has embedded Windows key which will activate Windows 10 Pro OR Windows 11 Pro if installed from an OEM installation media.