The P100 is an ATX case that epitomizes cool, quiet, and sophistication. It features Antecs award winning the Performance One series design and Quiet Computing technologies that minimize system noise. In addition to 7 expansion slots, the P100 also supports 2 tool-less 5.25 drives and 7 tool-less 3.5/ 2.5 drives. With a great price to feature ratio the P100 is the only economical case that delivers first class silence performance. A balance of price and feature is achieved by integrating Antec design with superior build quality. Engineered with Quiet Computing Technology, the P100 is truly in a class all its own.