The practical Y-cable powers energy-intensive devices such as external drives, for which a single USB port does not provide enough power. Simply connect the two USB plugs to two USB ports on a desktop PC or laptop to combine the electrical power and operate external HDDs, USB sticks, and other devices via the USB output – enabling powerful power and data transmission through a single cable. The USB Y-cable combines the power of two USB ports to supply energy-intensive devices like external 2.5-inch hard drives via USB. With USB 3.0, the cable achieves a rated power of up to 15 W. The USB splitter cable allows SuperSpeed data transfers of up to 5 Gbit/s – 10 times faster than USB 2.0. It is backward compatible with USB 2.0 and USB 1.1. The cable length is 0.3 m. The USB-A cable is UL certified to guarantee the highest quality and functionality.