Specifications: Drive Bay: Support four hot swap SAS 6G / SATA III drives and one 2.5" OS drive; Cooling Fan: 1 x 80mm standard case fans Switch: Power ON/OFF x 1, System reset x 1 Indicator:Power ON/OFF x 1, HDD x 1 Front Connector:Two front USB ports Motherboard Compatibility: Support Mini-ITX motherboard (6.7 x 6.7 inch) Power Supply: Support standard Flex ATX power supply (NOT included) Dimensions ( W x D x H ): 7.75 x 7.5 x 10 inch (19.7 x 19.1 x 25.4 cm) Weight: 9 lbs