Rennowa Lenovo ThinkCentre M83 SFF Intel Pentium G3420 4 GB RAM 500GB HDD NO DVD Windows 7 Pro COA Windows 10 Pro preinstalled Front ports 2x USB 3.0, 2x 3,5mm Audio Rear ports 2x USB 3.0, 4x USB 2.0, 2x DisplayPort, 1x VGA, 1x Serial, 3x 3,5mm Audio, 1xRJ45 4x RAM slots