When Doing Calibration for IWB, it says “Interactive
Whiteboard Disconnected”. Why？
- 1、Check if the USB cable connected to the whiteboard is connected to the computer
- 2、If the connection still prompts us to check whether the "Serial Bus Controller" of the computer's device
manager prompts for a driver displaying an exclamation mark, click the left mouse button to select it,
right-click to select "Update Driver".
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