GIGABYTE Poseidon, Midi Tower, PC, Black, ATX, Aluminium, 200 mm GIGABYTE Poseidon. Form factor: Midi Tower, Type: PC, Product colour: Black. Width: 200 mm, Depth: 495 mm, Height: 440 mm. Internal drive bays: 4 x 3.5", External drive bays: 5 x 5.25", 1 x 3.5"