Universal Serial Bus (USB) port problems

Use this information to diagnose and resolve USB port problems in the blade server.

The USB ports are shared BladeCenter unit resources. First, make sure that the USB ports are assigned to the blade server; then, see the following table and Solving shared BladeCenter resource problems.

Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved.

  • See Parts listing, Types 7871 and 1949 to determine which components are CRUs and which components are FRUs.
  • If an action step is preceded by "(Trained service technician only)," that step must be performed only by a trained service technician.
Symptom Action
A USB device does not work.
  1. Make sure that the media-tray select button LED on the front of the blade server is lit, indicating that the blade server is connected to the shared media tray.
  2. Check the function of the shared BladeCenter unit resources. See Solving shared BladeCenter resource problems.
  3. Make sure that:
    • The operating system supports USB devices.
    • The correct USB device driver is installed. For the latest device drivers, go to http://www.ibm.com/support/.
  4. (Trained service technician only) Replace the system-board assembly. See Removing the system-board assembly and Installing the system-board assembly.