### None of the devices work

None of the peripheral devices attached to the serial adapter work and the error counts are high.

Cause | Resolution
--- | ---
The port might not be working correctly. | Do the following: Conduct a loopback test or a terminal echo test to check the connection. If the test passes and the error counts are still high, go to the troubleshooting documentation for the adapter. If the test fails, check your cable connections and reboot. If you still are having difficulty, call Digi Technical Support