The case has two different scalable configuration options which Yeong Yang classifies as Type A and Type B. In a Type A configuration there are a total of 8 x 5.25" external drive bays, with 3 located on the top and 5 positioned on the bottom. In a Type B configuration there are a total of 10 x 5.25" external drive bays, with 3 located on the top, 2 located at the bottom and an easy swap fan to HDD cage module which adds an additional five drive bays. For those consumers who insist on using legacy floppy drives, Yeong Yang has also included a 5.25" to 3.5" drive conversion bracket which is located at the top of the drive cage.