Steps1. Disconnect the keyboard and/or mouse cables from the system and reconnect them.2. If the problem persists, connect the keyboard and/or mouse to another USB port on the system.3. If the problem is resolved, restart the system, enter System Setup, and check if the non-functioningUSB ports are enabled.NOTE: Older operating systems may not support USB 3.0.4. Check if USB 3.0 is enabled in System Setup. If enabled, disable it and see if the issue is resolved.5. In iDRAC Settings Utility, ensure that USB Management Port Mode is configured as Automatic orStandard OS Use.6. If the problem is not resolved, replace the keyboard and/or mouse with a known working keyboardor mouse.If the problem is not resolved, proceed to step 7 to troubleshoot other USB devices attached to thesystem.7. Turn off all attached USB devices, and disconnect them from the system.8. Restart the system.9. If your keyboard is functioning, enter System Setup, verify that all USB ports are enabled on theIntegrated Devices screen. If your keyboard is not functioning, use remote access to enable ordisable the USB options.10. Check if USB 3.0 is enabled in System Setup. If it is enabled, disable it and restart your system.11. If the system is not accessible, reset the NVRAM_CLR jumper inside your system and restore theBIOS to the default settings. See the System board jumper setting section12. In the IDRAC Settings Utility, ensure that USB Management Port Mode is configured as Automaticor Standard OS Use.13. Reconnect and turn on each USB device one at a time.14. If a USB device causes the same problem, turn off the device, replace the USB cable with a knowngood cable, and turn on the device.Next stepsIf all troubleshooting fails, see the Getting help section.Related LinksGetting helpSystem board jumper settingsTroubleshooting a serial I/O deviceSteps1. Turn off the system and any peripheral devices connected to the serial port.2. Swap the serial interface cable with a known working cable, and turn on the system and the serialdevice.If the problem is resolved, replace the interface cable with a known working cable.3. Turn off the system and the serial device, and swap the serial device with a compatible device.4. Turn on the system and the serial device.Next stepsIf the problem persists, see the Getting help section.198
