USB interface notice board and detection method

The invention discloses a USB interface notice board and a detection method, an electric connector is arranged in a USB interface, a plurality of contacts are arranged on the electric connector, the notice board comprises a connecting plug matched with the USB interface and a label board connected to the connecting plug, a prompt label is arranged on the label board, and the electric connector is connected with the contacts. One end, extending into the USB interface, of the connecting plug is provided with an adaptive hole adaptive to the electric connector, and the side wall of the adaptive hole is provided with conductive parts in contact with at least two contacts on the electric connector. According to the USB interface notice board and the detection method provided by the invention, an effect of warning and reminding staff can be achieved, and the probability of illegal external connection caused by misplug of a mobile phone and a USB flash disk into a USB interface is reduced. 本发明公开了一种USB接口提示牌及检测方法，所述US