Manufacturer (chassis) Advantech Design Rack (19") U 1 U Height 44 mm (H) Width 438 mm (W) Depth 480 mm (D) USB-Ports (front) 2 x USB Front Extension-slots Riser (FP) 2 x Full Profile Riser Card Extension-slots Riser (LP) 2 x Low Profile Risercard Assembly rails optionally available