Yon koòdone USB anjeneral gen kat fil: fil wouj (pouvwa pozitif), fil nwa (pouvwa negatif), fil vèt (done pozitif), ak fil blan (done negatif). Anplis de sa, fil la deyò deyò se yon fil pwoteksyon, ki te itilize yo anpeche entèferans ekstèn. Se fil la pwoteksyon trese nan yon seksyon ak dirèkteman soude nan koki an metal nan priz la USB.
Fonksyon debaz yo nan koòdone nan USB nan plato a USB
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