Drive Bays -Accessible -Hidden - 2 x 3.5 or 3 x 2.5 Expansion Slots - 7 Motherboards - 6.7 x 6.7 (Mini ITX), 9.6 x 9.6 (Micro ATX), 12 x 9.6 (ATX) I/O Port - USB 3.0 x 2, HD Audio x 1, RGB Button x 1 PSU - Standard PS2 PSU (optional) Fan Support - Front: 3 x 120mm, 2 x 140mm Top: 2 x 120mm, 2x 140mm Rear: 1 x 120mm, 1 x 140mm Radiator Support - Front: 1 x 240mm, 1 x 280mm Top: 1 x 240mm Clearance - CPU cooler height limitation: 180mm VGA length limitation: 320mm