The SATA 2x2 backplane from Dell supports 2 SATA hard drive. It offers 2 SATA connectors for connecting the backplane. It is designed such that a SATA drive can be installed in any slot. The 2x2 Backplane is specifically designed for use with Dell™ PowerEdge™ R730XD Server. This product has been tested and validated on Dell™ systems to ensure it will work with your computer. It is supported by Dell™ Technical Support when used with a Dell system.