Features Sophisticated Performance Refined Sophisticated and cutting-edge, the P280 emphasizes the ease of use, quiet technology and unparalleled performance characteristic of Antec's Performance One series. This advanced enclosure comes equipped with features that will maximize your PC experience, from Quiet Computing™ panels & HDD drive bays, to grommet-lined cable routing holes with ample space behind the motherboard tray. The P280 accommodates motherboards up to XL-ATX and includes nine expansion slots to support up to four 13.0" / 330 mm graphics cards. And with convenient tool-less optical drive bays, easy-access front & bottom PSU intake air filters, two front panel USB 3.0 ports and an affordable price, you get an elite enclosure that will last you for builds to come. Specifications Model P280 Case Type Super Mid Tower Color(s) Black with gunmetal anodized aluminum front door Cooling System • 2 x 120 mm top TwoCool™ exhaust fans • 1 x 120 mm rear TwoCool™ exhaust fan • 2 x 120 mm internal intake fans (optional) • 2 x 120 mm front intake fans (optional) • Fan power hub allows you to connect four 3-pin fans to a single Molex for improved cable management Drive Bays • 3 x 5.25” tool-less drive bays • 2 x 2.5” drive bays (dedicated) • 6 x 3.5” / 2.5” drive trays Front Ports 2 x USB 3.0 with internal motherboard connector 2 x USB 2.0 Audio In/Out Expansion Slots / video card size • 9 expansion slots • Maximum video card size: 13” / 330 mm Maximum CPU Cooler Height 6.7" / 170 mm PSU No power supply included Motherboard Support XL-ATX [13.6” x 10.3” (345 mm x 262 mm)], Standard ATX, microATX, Mini-ITX CPU Cutout Enlarged CPU cutout Cable Management 30 mm of cable routing space behind motherboard tray Side panel features None Dimensions • Unit Dimensions: - 526 mm (H) x 231 mm (W) x 562 mm (D) -20.7” (H) x 9.1” (W) x 22.1” (D) • Package Dimensions: -575 mm (H) x 290 mm (W) x 630 mm (D) -22.6” (H) x 11.4” (W) x 24.8” (D) Weight • Net Weight: 22.3 lbs / 10.2 kg • Gross Weight: 26.5 lbs / 12.0 kg Fore mor details go to http://www.antec.com/product.php?id=704504&fid=6&lan=us