Troubleshooting
PEB-2770/2780VG2A User’s Manual
4-22
USB Configuration
Legacy USB Support
Set to [Enabled] if you need to use any USB 1.1/2.0 device in the operating system
that does not support or have any USB 1.1/2.0 driver installed, such as DOS and SCO
Unix.
The choice: Disabled, Enabled, Auto.
Port 64/60 Emulation
The choice: Disabled, Enabled
USB 2.0 Controller Mode
This setting specifies the operation mode of the onboard USB 2.0 controller.
The choice: FullSpeed, HiSpeed.
BIOS EHCI Hand-Off
This is a workaround for OSes without EHCI hand-off support. The EHCI ownership
change should claim by EHCI driver.
The choice: Disabled, Enabled.
Legacy USB1.1 HC Support
The choice: Disabled, Enabled, Auto.