Chieftec Midi DG-01B-D-U no PSU. Width: 440 mm, Depth: 180 mm, Height: 460 mm. Ventilation fan(s): 1x 92mm front, 1x 92mm rear, 2x 92mm side, Internal drive bays: 2x 3,5", External drive bays: 3x 5 1/4" 2x 3,5"