Athena Power RM-2U2123HE12 12Gb/s 2U Hot-Swap 12-Bay E-ATX Rackmount Server Chassis w/ 12 Gbps Mini-SAS Backplane Supports 12 x 3.5' or 2.5' SAS /.

12Gb/s Mini-SAS HD (SFF-8643) Backplane 12 x 3.5’ or 2.5’ SAS (III-I) / SATA (III-I) Interface SSD / HDD Hot-Swap External Drive Bays Support M/B Size up to E-ATX (12’ x 13’) Support a 2U Redundant or 2U Single Power Supply 3 x 80mm Central Fans (w/ Individual Easy-install & Anti-vibration Bracket) LED: Power On / HDD Activity / LAN1 / LAN2 / Warning 3 x Full Height Horizontal PCI Slots