System Administration Guide: Devices and File Systems

ProcedureHow to Change the Default Configuration of a Multi-Configuration USB Device

Keep the following in mind when working with multi-configuration USB devices:

  1. Make sure that the device is not in use.

  2. Change the default USB configuration.

    For example:

    # cfgadm -x usb_config -o config=2 usb0/4
       Setting the device: /devices/pci@1f,0/usb@c,3:4
       to USB configuration 2
       This operation will suspend activity on the USB device
       Continue (yes/no)? yes
  3. Verify that the device changed.

    For example:

    # cfgadm -lv usb0/4
    Ap_Id  Receptacle   Occupant     Condition  Information When  Type    
         Busy     Phys_Id
    usb0/4 connected    unconfigured ok         Mfg: Sun  2000   
    Product: USB-B0B0 aka Robotech
    With 6 EPPS High Clk Mode   NConfigs: 7  Config: 2  : EVAL Board Setup  
    usb-device   n        /devices/pci@1f,0/usb@c,3:4

    Note that Config: now shows 2.