Specifications: Occupancy: 3 x 5.25" Drive Bays Capacity: 5x 3.5" Host Receptacle Connector, Hot-swap SAS/SATA HDD Cooling Subsystem: 1 x 90mm Exhaust Fan System Monitoring: Fan Fail Detection LED and Alarm, Overheat LED Indication Alarm Dimension: 5.8" x 5.0" x 9.7"