NORCO RPC-4220 4U Rackmount Server Chassis w/ 20 Hot-Swappable SATA/SAS 6G Drive Bays (Mini SAS Connector) Motherboard Compatibility: Support EEB (12x13), CEB(12x10.5), ATX (12x9.6), Micro ATX (9.6 x 9.6) Hot-Swap Drive Bays: 20 x SATA/SAS External Slim Drive Bays: 1 x slim CD-ROM bay Front Ports: USB 80mm Fans: 3 x 120mm middle fans wall 2 x 80mm rear fans Dimensions (H x W x D): 7.00 x 19.0 x 25.5 Weight: 39.7 lbs. Parts: 1 year limited