2U rack-mount short depth chassisSingle or redundant gold level high-efficiency power supplyTop cover for easy maintenance designIntel new platform Grantley M/B supportedSAS(SGPIO) and SATA 6Gb supportedExternal 3.5" x 12 or 2.5" x 12 hot-swap HDD trays with lock supportedEasy-swap 80 mm fan supported