Specifications: Interface: SAS / SATA Cooling fan: 2 x low noise 40mm (DC 12V./0.25A.) Power connector: 2 x Molex 4 Pin (-5V./12V.) LED Signal for HDD: Green=operating ; red=failed Accessories: 4 x cables, 2 x keys & installation screws Drive fit: 4 x SAS/SATA 2.5" HDD (9.5mm to max 15mm thickness) Drive Bay: 1 x 5.25" bay Dimensions: 5.75 x 1.65" x 7.08" Weight: 3.66 lbs. Front colour: Black / Silver Front material: Plastic Case color: Silver Case material: SECC 1.0mm Features: SAS/SATA Backplane. 4 x 2.5" HDD in 1 x 5.25" cage. Additional security with individual key lock. LED signal for HDD activity. 2 integrated 40 mm low-noise cooling fan. Hot-SWAP / Hot-Plug. Innovative & flexible design. User and technical friendly.