This 6 feet USB-A to Mini-B Y-Cable provides two USB 'A' Male connectors and a single USB 'mini-B' Male connector - an ideal solution for providing the additional power required by some mini-USB External Hard Drives connected to the standard USB ports provided by most computers. Especially valuable in situations where a single USB 2.0 port may not offer sufficient power to external hard drives, the USB A/Mini-B Y-cable can be connected to two ports on one PC to increase the power output to power the external device.