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3.6.7 USB Configuration
Legacy USB Support
Enables legacy USB support, Auto option disables legacy support if no USB
devices are connected. Disable option will keep USB devices available only for EFI
application.
[Disabled]/[Enabled]/[Auto]
Default is [Enabled]
EHCI Hand-off
[Disabled]/[Enabled]
Default is [Disabled]
Port 60/ 64 Emulation
Enables IO port 60h/64h emulation support This should be enabled for the
Complete USB keyboard legacy support for non-USB aware OSes.
[Disabled]/[Enabled]
Default is [Enabled]
USB transfer time-out
[1 sec]/[5 sec]/[10 sec]/[20 sec]
Default is [20 sec]
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