This dual-purpose cable connects any SATA hard drive or solid state drive to the logic board to provide power and data transfer. The primary drive slot supports a 3.5" SATA drive (although a 2.5" can also be fitted) and the secondary drive slot supports a 2.5" SATA drive. Both drives connect to SATA 3.0 connectors with support for 6.0 Gb/s speeds.