... for phone charge , not data transfer . used in widely !Adapt for HEC,Blackberry,MOTOROLA,NOKIA,SAMSUNG, ... MP4,PSP,DS,GBA devices . use method, plug in computer USB connector or other charger with USB ... connector . usage period,1,standard miniUSB plug (HEC,HTC,O2,Blackberry,MOTOROLA,Part of Chinese ... MP4,PDA,digital camera etc.)2,Standard microUSB plug (NOKIA,SAMSUNG,BLACKBERRY,MOTOROLA,LG ETC.),7, ...