Usb configuration, Come-bpc2 / bios operation – Kontron COMe-bPC2 User Manual

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COMe-bPC2 / BIOS Operation

USB Configuration

Feature

Option

Description

USB reset delay

Disabled

Enabled

Enable extra delay after reset during USB initialization.

This will give slow devices more time to get ready after
they have been reset.

Legacy USB Support

Auto

Disabled
Enabled

Enables support for legacy USB. Auto option disables

legacy support if no USB devices are connected.

Port 64/60 Emulation

Disabled
Enabled

Enables I/O port 60h/64h emulation support. This

should be enabled for the complete USB keyboard
legacy support for non-USB aware OSes.

USB 2.0 Controller Mode

FullSpeed
HiSpeed

Configures the USB 2.0 controller in HiSpeed

(480Mbps) or FullSpeed (12Mbps)

BIOS EHCI Hand-Off

Disabled
Enabled

This is a workaround for an OS without EHCI hand-off
support. The EHCI ownership change should claim by

the EHCI driver

USB Beep Message

Disabled
Enabled

Enables the beep during USB device enumeration

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