Data transmission line

The embodiment of the invention discloses a data transmission line. The data transmission line comprises a power supply input end and a power supply output end, the power supply input end is used for connecting a power supply, the power supply output end is used for connecting external equipment, the power supply input end and the power supply output end are connected through a cable connecting line, and the power supply output end comprises a data connector, a wiring terminal and a circuit board. Two ends of the wiring terminal are respectively connected with the data connector and the circuit board, the circuit board is electrically connected with the cable connecting line, and the circuit board is used for detecting the voltage and current of a power supply on the data transmission line and calculating and displaying the charging power in real time. According to the technical scheme of the embodiment, the related requirements of MFi authentication are met, the problems of window popup and incompatibility a