This external cable integrates power, SATA & USB (Universal Serial Bus) data signals into a single cable. This means that you can use just one cable when being used with a compatible computer port & an external power over e SATA device. ideal to be used with our 1 Port Power e SATA & USB (Universal Serial Bus) 2.0 Backplate Adapter & 1 Port Power e SATA & USB (Universal Serial Bus) 2.0 Backplate Adapter.