NEXCOM OPPC 1520T User Manual

Page 91

Chapter 4: BIOS Setup

OPPC 1520T/1720T User Manual

USB Configuration

This section is used to configure USB devices.

Enables support for

legacy USB. AUTO

option disables

legacy support if

no USB devices are

connected.

BIOS SETUP UTILITY

← →

Select Screen

↑↓

Select Item

Change Option

General Help

F10 Save and Exit

ESC Exit

USB Configuration

Module Version - 2.24.3-13.4

USB Devices Enabled:

1 Keyboard

Legacy USB Support

[Enabled]

USB 2.0 Controller Mode

[FullSpeed]

BIOS EHCI Hand-Off

[Enabled]

Hotplug USB FDD Support

[Auto]

USB Mass Storage Device Configuration

Advanced

Legacy USB Support

Due to the limited space of the BIOS ROM, the support for legacy USB
keyboard (in DOS mode) is by default set to Disabled. With more BIOS
ROM space available, it will be able to support more advanced features
as well as provide compatibility to a wide variety of peripheral devices.

If a PS/2 keyboard is not available and you need to use a USB keyboard
to install Windows (installation is performed in DOS mode) or run any
program under DOS, set this field to Enabled.

USB 2.0 Controller Mode

Sets the USB 2.0 controller mode to HiSpeed (480 Mbps) or FullSpeed
(12 Mbps).

BIOS EHCI Hand-Off

Enable this field when using operating systems without the EHCI hand-
off support.

Hotplug USB FDD Support

Enables or disables the USB FDD function.

USB Mass Storage Device Configuration

Configures the USB mass storage class devices.

If Auto, USB devices

less than 530MB will

be emulated as Floppy

and remaining as hard

drive. Forced FDD

option can be used to

force a HDD formatted

drive to boot as FDD

(Ex. ZIP drive).