The usb receiver of the page turning pen is broken.

If you don't use USB for a long time, it is easy to accumulate dust or cause poor contact. In this case, the USB interface should be cleaned. The location of the USB interface of the computer is narrow, which will cause the receiver not to be completely inserted into the computer. In addition, the same USB interface can be plugged into a USB flash drive, but the receiver inserted with a page-turning pen cannot be used. The attached USB cable can be used to connect the receiver and the computer.