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- 89 - BIOS Setup
5-2-9 
Parameter Description

USB Module Version Displays the USB version.
USB Controllers Displays the supported USB controllers.
USB Devices Displays the USB devices connected to the system.
Legacy USB Support
Enable/disable the Legacy USB support fuction. AUTO option disables
legacy support if no USB devices are connected. DISABLE option will
keep USB devices available only for EFI applications.
Options available: Auto/Enabled/Disabled. Default setting is Enabled.
XHCI Hand-off Enable/Disable the XHCI (USB 3.0) Hand-off support.
Options available: Enabled/Disabled. Default setting is Enabled.
USB Mass Storage Driver
Support(Note)
Enable/Disable the USB Mass Storage Driver Support.
Options available: Enabled/Disabled. Default setting is Enabled.
Port 60/64 Emulation
Enables the I/O port 60h/64h emulation support. This should be enabled
for the complete USB Keyboard Legacy support for non-USB aware OS.
Options available: Enabled/Disabled. Default setting is Enabled.
USB hardware delays and
time-outs
USB transfer time out The time-out value for Control, Bulk, and Interrupt transfers.
Options available: 1 sec/5 sec/10 sec/20 sec. Default setting is 20 sec.
(Note) This item is present only if you attach USB devices.
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