User`s guide

CheetaHub Power-3012B User’s Guide
Troubleshooting A-3
System Integrity
As a last resort verify the hub’s integrity with a power-on reset.
Turn the power to the hub off and then on a few times. If the
problem still persists and you have completed all the preceding
diagnoses, contact your Accton distributor for further
assistance. (Refer to Appendix E.)