There are times you may have an external device such as a portable 25 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 the usb 20 y cablesthe cable features a red molded hood for the auxiliary usb a connector allowing the user to easily distinguish between main and auxiliary power foil and braid shielding reduces emirfi interference and a twisted pair construction helps reduce crosstalk ensuring