C2G 28107 USB Cable - USB 2.0 Two USB-A Male to One USB Mini-B Male Y-Cable, Black (6 Feet, 1.82 Meters) Increase the power running to a portable hard drive from your PC or Mac Connector 1: (1) USB Mini-B Male Connector 2: (2) USB-A Male Increase the power running to a portable hard drive from your PC or Mac Connectors: 1 USB type mini-B male to 2 USB type A male Foil and braid shield reduces EMI/RFI interference Red molded hood for auxiliary power Compatible with USB 1.0, 1.1, and 2.0 The USB 2.0 y-cable is the perfect product to use when a standard USB cable cannot transfer enough power to operate an external device, such as a portable 2.5&#034; hard drive Simply plug this cable&#039;s USB Mini-b end into the device, and then plug the two USB A ends into open USB ports on one PC or Mac. This cable then pulls power from both USB ports, and thus increases the output to the external drive. The red molded hood on the auxiliary USB A connector enables the user to quickly distinguish between main and auxiliary power. This cable is compatible with USB 1.0, 1.1, and 2.0 specifications. Foil and braid shielding reduces EMI/RFI interference, and twisted pair construction reduces cross-talk for high speed, error-free data transfer.