Rugged Heavy duty full metal construction with commercially designed for Medical & Military systems, Media servers, and IPCs, approved & used by Tier 1 companies. ^^ Fits 4 x 5mm to 15mm 2.5 SATA HDD or SSD in a single external 5.25 bay for high performance RAID applications. ^^ 1 x 4 pin power connector to reduce cable connections. ^^ Supports SATA 6Gbps or SAS 12Gbps (single channel) ^^ Fan On/Off Control - adjust fan settings according to your HDD/SSD temperature ^^ Industry-leading 5 years limited warranty with exceptional customer support