Compact and retractable USB Power Port Ready charge cable designed for the HTC EVO 4G and uses TipExchange Ever been stranded with a dead battery because your USB data cable didnt put your HTC EVO 4G into charge mode? At Gomadic we resolved this issue ... read on below in to learn what we do different with our USB Power Port Ready cables Cable tip wiring and power configuration is designed to HTC specification to guarantee to put your EVO 4G into the proper charge mode for the fastest charging possible Included TipExchange Tip ensures the fastest charging by putting your phone into charge mode rather than the typicale USB data mode that every other brand does ... this attention to detail resulting in faster and more consistant USB power port charging cable expands from 2 to 34 inches in seconds (and everything in between). Simply press the integrated retraction button, and the cable effortlessly rolls back into the casing. no additional AC power required. Uses power from the USB port of the computer to charge the HTC EVO 4G.