USB Power Port Ready retractable USB charge USB cable wired specifically for the Cowon X9 and uses TipExchange 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 tip wiring and power configuration is designed to Cowon specification to guarantee to put your X9 into the proper charge mode for the fastest charging possible Ever been stranded with a dead battery because your USB data cable didnt put your Cowon X9 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 retractable design provides unbelievable compactness. Durable, highly conductive and thin 30AWG copper data leads that support dual charging and data functions. 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.