Icy Dock MB994SP-4S Drive Bay Adapter Serial ATA, Serial Attached SCSI (SAS) - Serial ATA Host Interface Internal - Matte Black - 4 x HDD Supported - 4 x SSD Supported - 4 x Total Bay - 4 x 2.5in Bay - 12 Gbit/s Data Transfer Rate

2 x 4 pin power connector to reduce cable connections. Eagle-hook lock system keeps drives secured within the enclosure. Active Power Technology (APT) - individual led & cooling fan only powers up if there is a drive installed in the bay. Perfect for rugged applications and complies with flammability requirements. Removable EZ-Slide Mini tray system for easy maintenance. Fits 4 x 5mm to 15mm 2.5in SATA HDD or SSD in a single external 5.25in bay for high performance RAID applications. Top Cover for the Tray Adds Extra Drive Protection. Anti-Vibration Technology (AVT) - creates a safe environment for hard drives or SSDs. Dual 40mm cooling fans. Rugged Heavy duty full metal construction with commercially designed for Medical & Military systems, Media servers, and IPCs, approved & used by Tier 1 companies.