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R3S User Manual
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Feature Options Description
Legacy USB Support
Enabled
Disabled
Auto
Enables Legacy USB support.
Auto option disables legacy support if no USB
devices are connected; Disabled option will keep
USB devices available only for EFI applications.
XHCI Hand-off
Enabled
Disabled
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 Enabled
Disabled
Enables or disables USB Mass Storage Driver
Support.
USB transfer time-out
1 sec / 5 sec
10 sec / 20 sec
The time-out value for Control, Bulk, and
Interrupt transfers
Device reset time-out
1 sec / 5 sec
10 sec / 20 sec
USB mass storage device Start Unit command
time-out
Device power-up delay
Auto
Manual
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.