Athena Power RM-2U2123HER2808 2U Server Storage EATX Chassis w/12x 3.5SAS/SATA Hot SWAP, 800W Redundant 80 PLUS BRONZE Motherboard Compatibility: MicroATX (9.6 in. x 9.6 in.) ATX (12 in. x 10 in.) E-ATX (12 in. x 13 in.) Mini-ITX (6.7 in. x 6.7 in.) Power Supply: 800W Redundant External 3.5 Drive Bays: 12 Hot-Swap Drive Bays: 12 80mm Fans: 3