Antec does it again! The NSK 6500 offers maximum room for your drives without resorting to a full sized tower. It boasts a staggering five internal 3.5" drive cage. Not content there, it integrates four 5.25" external drives by removing the rarely used 3.5" external bays. If you want any of the external bays to be 3.5", a simple adaptor can be used to convert them seamlessly. Naturally it includes two USB ports, a Firewire port, and two audio ports located on the front of the case for easy access.