TOOL-FREE KITS OPTIONAL ATX Middle Tower Case ATX / MICRO ATX., P4 M / B Support Material : SGCC or SECC Thickness: 0.5 mm / 0.6 mm Drivebays: 4 * 5.25 ( External ) 2 * 3.5 ( External ) 5 * 3.5 ( Internal ) Expansion Slots: 7 1 * 8 cm / 9 cm / 12 cm Fan Option in the back 1 * 8 cm / 9 cm / 12 cm Fan Option in the front Air Duct Optional Case Dimensions: 490 * 190 * 420 ( H * W * D , mm ) Package: 539 * 232 * 465 ( H * W * D , mm ) 1 * 40' HQ : 1160 pcs 1 * 20 CTN: 490 pcs You can visit our PC Case website to choose your prefered products: