Usb configuration – NEXCOM DNA 120 User Manual

Page 49

DNA 120 User Manual

Chapter 4: BIOS Setup

EHCI Hand-Off
This is a workaround for OSs that does not support EHCI hand-off. The EHCI
ownership change should be claimed by the EHCI driver.

USB Mass Storage Driver
Enables or disables USB mass storage driver support.

USB Transfer Time-out
The time-out value for control, bulk, and Interrupt transfers.

Device Reset Time-out
Selects the USB mass storage device’s start unit command timeout.

Device Power-up Delay
Maximum time the value will take before it properly reports it self 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.

Advanced

→←: Select Screen
↑↓: Select Item
Enter: Select
+/-: Change Opt.
F1: General Help
F2: Previous Values
F3: Optimized Defaults
F4: Save & Exit
ESC: Exit

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.

USB Configuration

USB Module Version

USB Devices:

1 Keyboard, 1 Hub

Legacy USB Support

XHCI Hand-off

EHCI Hand-off

USB Mass Storage Driv

USB hardware delays a

USB transfer time-out

Device reset time-out

Device power-up delay

8.11.01

[Enabled]

[Disabled]

[Enabled]

[20 sec]

[Auto]

Legacy USB Support
Enable Enables Legacy USB.
Auto

Disables support for Legacy when no USB devices are connected.

Disable Keeps USB devices available only for EFI applications.

XHCI Hand-Off
This is a workaround for OSs that does not support XHCI hand-off. The
XHCI ownership change should be claimed by the XHCI driver.

USB Configuration

This section is used to configure the USB.