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IMB520R / 521R LGA1151 ATX Motherboard
USB Configuration
This screen shows USB configuration.
USB Devices
Displays all detected USB devices.
Legacy USB Support
Enables Legacy USB support. AUTO option disables legacy support if no USB devices are
connected.
XHCI Hand-off
This is a workaround for OSes without XHCI hand-off support. The XHCI ownership
change should be claimed by XHCI driver.
USB Mass Storage Driver Support
Enable/Disable USB Mass Storage Driver Support.
USB transfer time-out
The time-out value for Control, Bulk, and Interrupt transfers.
Device reset time-out
USB mass storage device Start Unit command time-out.
Device power-up delay
Maximum time the device will take before it properly reports itself to the Host Controller.
'Auto' uses default value: for a Root port it is 100 ms, for a Hub port the delay is taken from
Hub descriptor.
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AMI BIOS Setup Utility
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