PC Case Cooler Master Elite 310th It is a full ATX midi-tower designed for motherboards supporting Intel and AMD. Outside ATX motherboard is compatible with microATX. Cabinet also features 4x 5.25 "drive bays, 1 x 3.5" external, 6x 3.5 "internal bays. On the rear panel you can find 7x I/O slot, for any expansion cards (sound card, TV tuner, bracket, etc). Cabinet has 3 positions for fans (side 1 x 80/90/120 mm, 1x120 mm front and rear 1 x 80/90/120 mm), the position is equipped with a rear 120 mm fan from the factory. cabinet also includes standard outputs on the front panel and 2x USB 2.0 and a pair of audio jacks for input and output.