Usb Configuration - Intel ECM-APL User Manual

Apollo lake processor 3.5 micro module
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3.6.3.4.4 USB Configuration

Item
Option
Description
Enable
XHCI Pre-Boot Driver
Enable/Disable XHCI Pre-Boot Driver support.
Disable[Default]
Once disabled, XHCI controller would be function
Enable[Default]
disabled, none of the USB devices are detectable
xHCI Mode
Disable
and usable during boot and in OS. Do not disable
it unless for debug purpose.
ECM-APL User's Manual 59

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