Avalue ECM-QM77 - Manual (Page 66)

ECM-QM77
66 ECM-QM77 User ’s Manual
3.6.3.1.2 USB Configuration
Item Option Description
XHCI Pre-Boot Driver
Disabled
Enabled[Default]
Enable or disable XHCI Pre-Boot
Driver support.
xHCI Mode
Smart Auto[Default]
Auto
Enabled
Disabled
Mode of operation of xHCI
controller.
HS Port #1/#2/#3/#4 Switchable
Disabled
Enabled[Default]
Allows for HS port switching
between xHCI and EHCI. If
disabled, port is routed to EHCI. If
HS port is routed to xHCI, the
corresponfing SS port is enabled.
xHCI Streams
Disabled
Enabled[Default]
Enable or disable xHCI Maximum
Primary Stream Array Size.
EHCI1/2
Disabled
Enabled[Default]
Control the USB EHCI (USB 2.0)
functions. One EHCI controller
must always be enabled.
USB Ports Per-Port Disable Control
Disabled[Default]
Enabled
Control each of the USB ports
(0~13) disabling.