ASUS TA-B11, Midi Tower, PC, Black, Silver, ATX, 180 mm, 495 mm ASUS TA-B11. Form factor: Midi Tower, Type: PC, Product colour: Black, Silver. Width: 180 mm, Depth: 495 mm, Height: 408 mm. Ventilation fan(s): Front 80 mm x 2 Rear: 80 mm x 1, Internal drive bays: 6 x 3.5", External drive bays: 4 x 5.25", 1 x 3.5"