Antec P182 Advanced Super Mid Tower ATX Case (Black/Stainless Steel Trim) Attractive gun metal black finish/Stainless Steel Trim Dual chambers structure: The power supply (not included) is located in the lower chamber to isolate heat from the system and lower system noise Special three-layer side panels and front door (aluminum, plastic, aluminum) dampen system generated noise, making this one of the quietest cases available 0.8mm cold rolled steel for durability used through the majority of the chassis, 1.0mm cold rolled steel around the 4x HDD area 11 Drive Bays:- External 4 x 5.25inches 1 x 3.5 inches - Internal 6 x 3.5 for HDD