This slim chassis is an updated model from Antec, and built especially for MiniITX systems. It is among the smallest chassis we've ever carried here at Puget, in part due to the use of laptop-style hard drives and optical drives which help to keep the footprint to a minimum. Unlike previous ITX cases we've used, though, this model has an internal power supply (not an external power brick) which cuts down on overall bulk. It can be operated either horizontally or vertically, and has been incorporated into the latest versions of our Echo I and II systems.