Tacens Sera, Midi Tower, PC, Black, Silver, ATX, 6.97" (177 mm), 16.5" (420 mm) Tacens Sera. Form factor: Midi Tower, Type: PC, Product color: Black, Silver. Width: 6.97" (177 mm), Depth: 16.5" (420 mm), Height: 16.1" (409 mm). Ventilation fan(s): 90x90x25 mm, Internal drive bays: 4 x 3.5”, External drive bays: 4 x 5.25”, 1 x 3.5”