Cableless Connection, Support Plug & Play, Hot-Swappable Power Control & Security Key Lock That Reduces From Potential Electronic Points of Failure Best Air Ventilation with 1 Front Fan Point to Point, Free from Master / Slave Setting Unique 7.5' Depth Compact Size Military Grade Quality Aluminum Frame & Tray High Performance Transfer Rate up to 6.0 Gb/s Support 3.5' SAS I/II & SATA I/II/III HDD 12TB Hard Drives Compatible