Intel IB957 user manual USB Configuration, Legacy USB Support, EHCI Hand-off, Device Reset Timeout

BIOS SETUP

USB Configuration

Aptio Setup Utility

Main	Advanced	Chipset	Boot	Security
USB Configuration
USB Devices:
	2 Hubs
Legacy USB Support			Enabled
EHCI Hand-off			Enabled
Device Reset Timeout			20 sec

Save & Exit Event Logs

→←Select Screen

↑↓ Select Item Enter: Select +- Change Field F1: General Help

F2: Previous Values

F3: Optimized Default

F4: Save ESC: Exit

Legacy USB Support

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.

EHCI Hand-off

Enabled/Disabled. This is a workaround for Oses without EHCI hand-off support. The EHCI ownership change should be claimed by EHCI driver.

Device Reset Timeout

USB mass storage device Start Unit command timeout.

Options are: 10 sec / 20 sec / 30 sec / 40 sec.

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