iMicro 400W 20+4pin Micro-ATX Mini Tower Case CA-IMA31B Features: Quality Micro ATX Computer Case One screw for easy opening and quick installation of cases Two slide inside door for easy access to chassis Fits in all types of Mainboard upto 244mm Case Type: Mini ATX Case Material: S.G.C.C.steel sheeting M/B Type: Micro ATX Drive Bays: 5 External Bay: 3x 5.25", 1x 3.5" Internal Bay: 1x 3.5 Expansion Slots: 4 Cooling System: 1x 80/90mm Rear Fan (Optional); 1x 80mm Side Fan (Optional) Side Windows: No Front I/O Panel: 4x USB 2.0, Microphone, Earphone Power Supply: 400W ATX Power Supply w/ 20+4pin Main Power, 1x SATA connector