Athena Power RM-4UWIN525 Black 1.2mm SECC 4U Rackmount Server Case Mini-Redundant 2U Micro Redundant PS2 Single 3U Single 8 External 5.25 Drive Bays Motherboard Compatibility: MicroATX (9.6 in. x 9.6 in.) ATX (12 in. x 9.6 in.) Mini-ITX (6.7 in. x 6.7 in.) Power Supply: Mini-Redundant 2U Micro Redundant PS2 Single 3U Single External 5.25 Drive Bays: 8 Expansion Slots: Low-Profile x 7 Front Ports: 1 x Front 2-Port USB 3.0 80mm Fans: 2 x 80mm (Rear) 120mm Fans: 3 x 120mm (Center w/ easy-install & anti-vibration bracket) Dimensions (H x W x D): 6.92 x 20.67 x 17.13