Troubleshooting A Serial I/O Device; Troubleshooting A Nic - Dell PowerEdge C6320 Owner's Manual

9. If your keyboard is functioning, enter System Setup, verify that all USB ports are enabled on the
Integrated Devices screen. If your keyboard is not functioning, use remote access to enable or
disable 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 the
BIOS to the default settings. See the System board jumper setting section
12. In the IDRAC Settings Utility, ensure that USB Management Port Mode is configured as Automatic
or 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 known
good cable, and turn on the device.
Next steps
If all troubleshooting fails, see the Getting help section.

Troubleshooting a serial I/O device

Steps
1. 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 serial
device.
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 steps
If the problem persists, see the Getting help section.
Related Links
Getting help

Troubleshooting a NIC

Steps
1. Run the appropriate diagnostic test. For more information, see the Using system diagnostics section
for the available diagnostic tests.
2. Restart the system and check for any system messages pertaining to the NIC controller.
3. Check the appropriate indicator on the NIC connector:
• If the link indicator does not glow, the cable connected might be disengaged.
• If the activity indicator does not glow, the network driver files might be damaged or missing.
Install or replace the drivers as necessary. For more information, see the NIC documentation.
• If the problem persists, use another connector on the switch or hub.
4. Ensure that the appropriate drivers are installed and the protocols are bound. For more information,
see the NIC documentation.
5. Enter System Setup and confirm that the NIC ports are enabled on the Integrated Devices screen.
6. Ensure that all the NICs, hubs, and switches on the network are set to the same data transmission
speed and duplex. For more information, see the documentation for each network device.
7. Ensure that all network cables are of the proper type and do not exceed the maximum length.
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