The NSK 4482B Mid Tower case brings together environmentally-friendly and Quiet Computing„¢ features making it one of Antec's best values ever. Along with its exceptional ventilation and attractively understated styling, the NSK 4482B features an 80PLUS® Bronze certified EarthWatts 380D Green power supply. This exceptionally efficient power supply creates less electrical waste while delivering the same quality performance, lowering your electric bill while protecting the planet. Now featuring Audio In and Out along with two USB 2.0 ports on the front panel, the NSK 4482B is cool, quiet, efficient, and stylish: the perfect solution for your next build.