Intel Celeron, i3, i5, and i7 processors. 1U 19” wide and 17.7” deep, short chassis, heavy-duty cold rolled electroplated steel chassis. 3x (40 x 28mm = 15.3CFM ea.) fans. Triple video output VGA and dual DVI-D. 500W AC Single or 460W DC power supply. 4GB, 8GB or 16GB DDR3 RAM options Up to 3 HDD/SDD.