Cannot find the serial port for my robot on mBlock and there are lots of BT port under the device manager like below.

Cause: The Bluetooth module you paired before will be mapped into COM ports. Even if they are not present, they still appear in the “Serial Port” list. Uninstall those paired Bluetooth devices will resolve this issue.

Solution: disable or uninstall all the Bluetooth ports (COM ports) from the PC.

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