User manual

49 PCE-5125 User Manual
Chapter 3 AMI BIOS Setup
3.2.2.12 USB Configuration
Figure 3.14 USB configuration
! USB Function
This enables or disables USB host controllers.
– EHCI Controller#1
This allows user to enable or disable USB EHCI Controller#1.
– EHCI Controller#2
This allows user to enable or disable USB EHCI Controller#2.
! Legacy USB Support
This is for supporting USB device under legacy OS such as DOS. When choos-
ing "AUTO", the system will automatically detect if any USB device is plugged
into the computer and enable USB legacy mode when a USB device is plugged
and disable USB legacy mode when no USB device is plugged.
! USB 2.0 Controller Mode
This is to set speed of the USB 2.0 Controller.
! BIOS EHCI Hand-Off
This enables or disables supporting OS without EHCI hand-off feature.
! Legacy USB 1.1 HC Support
This enables or disables USB 1.1 support.