Programmable USB switching device

The invention relates to programmable USB (Universal Serial Bus) switching equipment, which effectively solves the problems of relatively complicated operation and relatively low efficiency in the process of monitoring operation information of a wind power plant. According to the technical scheme, a plurality of USB ports are formed in one side of a box body at intervals, the USB ports are connected with relays arranged in the box body, and the relays are jointly connected with a relay control module arranged in the box body; a protective cover is slidably installed on the side, provided with the USB port, of the box body, a ventilation assembly is arranged on the side, away from the box body, of the protective cover, and flow guide assemblies are arranged in the box body and located on the two sides of the USB port correspondingly and communicate with the sealing cavity. Fan assemblies are arranged on the two sides of the box body respectively; according to the utility model, the corresponding USB equipment