Oracle^® x86 Server Diagnostics, Applications, and Utilities Guide

usb

The usb command displays information extracted from UEFI USB protocols for USB root hubs, ports, and devices.

Command Syntax

udiag usb { hubs | <hub_id> | device | <device_id> }

Options

Options Descriptions hubs Displays USB root hubs. Each hub is identified by a hub ID in the list. <hub_id> Specifies a USB hub to display. Entered as h<hex_number>. devices Displays USB devices that have a driver attached. Each device is identified by a device ID in the list. <device_id> Specifies a USB device to display. Entered as d<hex_number>.

Resource Requirements

BSP_ONLY; ONE_INSTANCE_ONLY

Examples

To list USB controllers, type:

fs0:/> udiag usb hubs

To display information for the second USB hub in the list, type:

fs0:/> udiag usb h1

To list active USB devices, type:

fs0:/> udiag usb devices

To display information for the fourth device in the list, type:

fs0:/> udiag usb d3