Troubleshooting
1. If you accidentally have the loopback pins jumpered.
2. You may not be using an updated FTDI driver.
a. This may require you to reboot your computer.
b. Disconnect the power and USB from the XBIB-U-DEV board and reconnect it.
Digi XBee3 Cellular LTE-M Global Smart Modem User Guide
Cannot find the serial port for the device
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