Lenovo ThinkSystem HR350A, User Manual And Hardware Maintenance Manual

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3.4.11 USB Configuration
This screen displays the detected USB devices installed on the system.
Below table explains fields from this USB configuration setting:
Setting Description
USB Controllers Number of USB controllers installed in the system.
USB Devices Displays list of category USB devices detected in the system.
XHCI HanD-off This is a workaround for OSes without XHCI hand-off support. The XHCI ownership change
should be claimed by XHCI driver.
Default value: ‘Enabled’.
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 form
Hub description.
Mass Storage Devices Displays list of mass storage devices detected in the system.