Model: KF-3001-BK 3.5" Internal hot swap rack raid-3 bay No inner tray required Space for 3 H.D.D. w/ 2 bay slots Easy transport and secure valuable data Easy open latch door For standard 1" height, 3.5" SATA H.D.D. LED indicator One 80 x 80 mm rear fan Two rear cooling fans Patent NSS (Non-Scratch SATA connector) 50,000 times insertion rate Supports hot swap Supports SATA II (3.0 Gb/s) Tool-less design for H.D.D. installation Tray-less design Driver-free support Latch Switch Hot-Swap function requires SATA Controller RAID function requires RAID Controller Support for up to 4TB HDD