Electronic apparatus connection cable with identification information providing function

An electronic apparatus connection cable comprising a first plug. The first plug comprises: a first power receiving terminal; a first switch coupled to the first power receiving terminal; a power transmission line coupled to the first switch; a second switch coupled to the power transmission line; a first light emitting device coupled to the power transmission line, wherein a distance between the first emitting device and the second plug is smaller than a distance between the first emitting device and the first plug. When the first power receiving terminal receives a first input voltage and the first switch is conductive, the first light emitting device emits light.