Bios - advanced – Kontron KTHM76-mITX User Manual

Page 85

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KTQM77 – KTHM76 Users Guide

KTD-N0850-F Page 85

Function

Selection

Description

Legacy USB Support

Enabled

Disabled
Auto

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

applications.

USB3.0 Support

Enabled

Disabled

Enable/Disable USB3.0 (XHCI) Controller

support.

XHCI Hand-off

Enabled

Disabled

This is a workaround for OSes without XHCI

hand-off support.
The XHCI ownership change should be claimed

by XHCI driver.

EHCI Hand-off

Enabled

Disabled

This is a workaround for OSes without EHCI

hand-off support.
The EHCI ownership change should be claimed

by EHCI driver.

USB Mass Storage Driver

Support

Enabled

Disabled

Enable/disable USB Mass Storage Driver

Support.

USB transfer time-out

1 sec

5 sec

10 sec

20 sec

The time-out value for Control, Bulk, and

Interrupt transfers.

Device reset time-out

10 sec

20 sec

30 sec

40 sec

USB mass storage device Start Unit command

time-out.

Device power-up delay

Auto

Normal

Maximum time the device will take before it

properly reports itself to the Host Controller.

‘Auto’ uses default value: for a Root port it is

100 ms, for a Hub port the delay is taken from

Hub descriptor.

BIOS - Advanced

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