There are times you may have an external device, such as a portable 2.5"" hard drive, and a standard USB cable is not able to transfer enough power to operate the device. This problem can be easily solved by using our USB 2.0 Y Cables which giving extra 5V power. Simply plug the USB Mini-B end into the device and the two USB A ends into open USB ports on a single PC or Mac. The cable then pulls power from both USB ports, increasing the output to the external drive. The cable features a red molded hood for the auxiliary USB A connector, allowing the user to easily distinguish between main and auxiliary power. Features: Brand by Akiba-Accessories Connector A : 1 - Type A USB2.0 Male Connector B : 1 - Type A USB2.0 Male (for additional power) Connector C : 1 - Type Mini-B USB2.0 Male Data transfer rates up to 480 Mbps 5-Pin USB Mini-B (M) to dual USB A (M) connectors Color : Black (Note : Photo attached is for reference only, it may be slightly varied in items of colour, shape from the actual item delivered from time to time)