The invention discloses a control method of external equipment, the external equipment, a host and a storage medium, and relates to the technical field of the external equipment, the control method is applied to the external equipment, and the external equipment comprises a wired interface, a video bridging
chip, a display module and an operation module. Based on the control instruction of the current display content of the display module, the control instruction is sent to the host through the wired interface; a display port
signal fed back by the host after executing the control instruction is converted into a
mobile industry processor interface signal based on the video bridging
chip; and outputting a display picture corresponding to the interface
signal of the mobile industry processor in the display module. The external equipment does not need to be equipped with a high-power-consumption
assembly supporting independent operation, so that a high-capacity battery does not need to be arranged to meet the high-power-consumption requirement, the problem of equipment weight increase caused by the high-capacity battery is effectively avoided, and the user experience is improved.