Serial numbers are 17 digits long (or 4 digits long for some headphones) and can include letters and numbers. In addition, for products compatible with the Bose Connect app, the Bose Music app, the Bose Sleep app or the Bose Hear app, the serial number will be displayed under Settings >...
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Then change COM Port Number to COM1It shows "USB Serial Port (COM1)"Then can access the door system successfully.After reboot the computer, it can't access the door system again.I notice this:C:\Users\Administrator>change port /q