The corsair carbide series everything you need nothing you don39t the front panel includes two usb 30 connectors and audio connectors a compact expression of corsair39s gaming philosophy great systems start with a great case and carbide series 300r provides a remarkable number of features in a compact chassis easy access lots of room for expansion and superior cooling make the 300r a great choice for building powerful pcs that don39t take up a lot of room serious cooling potential the 300r