DESC: 10 pci slots design for quad-graphic card configuration. adjustable psu supporting bridge o micro atx atx extend-atx supported case type: full tower color: black material: aluminum front door chassis: 1.0 mm secc m/b type: micro atx atx extend atx drive bays: o external bay: 7x 5.25" o internal bay: 7x 3.5" external 1 x3.5 (convertible from one 5.25 drive bay) expansion slots: 10. front i/o panel: 2x usb 2.0; 1x ieee 1394; 1x hd audio; e-sata connector x2.