=== USB configuration

ifdef::topdoc[:imagesdir: {topdoc}../../test/case/hardware/usb]

==== Description

This test checks if the configuration is consistent with hardware state,
and verifies whether the USB ports are correctly _locked_ (restricted from
use) and _unlocked_ (available for use) when they should. It also verifies
this behavior during reboot. This test does not involve the actual use of
the USB port; it only ensures the configured state is consistent with the
hardware state.

If this pass you can be certain that the configuration of the USB
port is handled correctly.

==== Topology

image::topology.svg[USB configuration topology, align=center, scaledwidth=75%]

==== Sequence

. Set up topology and attach to target DUT
. Unlock all USB ports
. Verify that all USB ports are unlocked
. Lock all USB ports
. Verify that all USB ports are locked
. Remove all hardware configuration
. Verify that all USB ports are locked
. Unlock USB ports
. Verify that all USB ports are unlocked
. Save the configuration to startup configuration and reboot
. Verify USB port remain unlocked after reboot