Material Steel Body, (0.5mm/SECC), ABS plastic; Dimension (W / H / D) 192 x 427 x 499 mm; Weight 5.0 kg / 11 lb; M/B Type ATX /Micro-ATX; 5.25" Drive Bay 3 Exposed (w/o X-Docking); 3.5" Drive Bay 2 Exposed, 5 Hidden; 2.5"/3.5"- SATA HDD Drive Bay 1 Exposed (converted from one 5.25” bay); I/O Panel USB 3.0 x 1(int.) , USB 2.0 x 2, Mic x 1 , Audio x 1; Expansion Slots 7;