àæ àéê ìäòáéø 1.5 àîôø ? ììà ääúðâãåú æä îòáéø ø÷ 500 îéìé
âí ìôé åé÷éôãéä æä ëëä
The charging device identifies the type of port through non-data signalling on the D+ and D− signals immediately after attach. A DCP simply has to place a resistance not exceeding 200*Ω across the D+ and D− signals.[95][96]
https://en.m.wikipedia.org/wiki/USB#BCS
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