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User’s Manual

EQM-BYT User’s Manual 29

3.6.2.11 USB Configuration

The USB configuration menu is used to read USB configuration information and configure

USB.

Item

Options

Description

Legacy USB support

Enabled[Default]

Disabled

Auto

Enables Legacy USB support.

AUTO disables legacy support if no USB devices are

connected. DISABLE will keep USB devices

available only for EFI applications.

XHCI Hand-off

Enabled[Default]

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[Default]

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[Default]

Disabled

Enable/Disable USB Mass Storage Driver Support.

USB transfer time-out

1sec / 5sec

10sec /

20sec[Default]

The time-out value for Control, Bulk, and Interrupt

transfers.

Device reset time-out

10sec /

20sec[Default]

30sec / 40sec

USB mass storage device Start Unit command

time-out.

Device power-up delay

Auto[Default]

Manual

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 100ms, for a Hub

port the delay is taken from Hub descriptor.

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