40cm USB 2.0 a Power Enhancer Y 1 Female to 2 Male Data Charge Cable Extension Cord 100% Brand New USB 2.0 A female to dual USB A male Y Power Enhancer cable. USB 2.0 A female to dual USB A male Y Power Enhancer cable. Attention: One USB port is for charging only and the other is for Sync Tranfer only USB 2 Male TO USB Female Allows you to link 1 USB device into 2 USB Ports on your PC for charge and sync transfer at the same time. 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.