Advantech ARK-2121F User Manual page 50

3.5.2.2 USB Configuration

OS Selection
OS Selection to choose Windows 8.X / Windows 7.

XHCI Mode
Mode of operation of xHCI controller.

USB 2.0(EHCI) Support
Control the USB EHCI (USB 2.0) functions. One EHCI controller must always be
enabled.

USB Per Port Control
Control each of the USB ports (1~4). Enable: Enable USB per port; Disable: Use
USB port X settings.
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