Sophisticated and cutting-edge, the P280 emphasizes the ease of use, quiet technology and unparalleled performancecharacteristic of Antecs Performance One series. This advanced enclosure comes equipped with features that willmaximize your PC experience, from Quiet Computing panels and HDD drive trays, to grommet-lined cable routing holeswith 30 mm of space behind the motherboard tray. The P280 accommodates motherboards up to XL-ATX (10.3 x 13.6)and includes nine expansion slots to support up to four 13.0 long graphics cards. To keep your top-notch system cool, itfeatures two top 120 mm and one rear 120 mm TwoCool fans. And with convenient tool-less optical drive bays, easy accessfront & bottom PSU intake air filters, two front panel USB 3.0 ports and an affordable price, you get an elite enclosurethat will last you for builds to come. Graduate to the next class in custom PC building with the Performance One P280,and let your system come to life.