5 pcipnp, 6 led control, Usb 2.0 controller mode [hispeed – Asus Crosshair IV Formula User Manual
Page 103: Bios ehci hand-off [enabled, Plug and play o/s [no, All led control [enabled

ROG Crosshair IV Formula
3-27
USB 2.0 Controller Mode [HiSpeed]
[FullSpeed]
Set the USB 2.0 controller mode to FullSpeed (12 Mbps).
[HiSpeed]
Set the USB 2.0 controller mode to HiSpeed (480 Mbps).
The USB 2.0 Controller Mode item appears only when you enable the USB
2.0 Controller.
BIOS EHCI Hand-off [Enabled]
[Enabled]
Enables the support for operating systems without an EHCI
hand-off feature.
[Disabled]
Disables the function.
3.5.5
PCIPnP
The PCI PnP menu items allow you to change the advanced settings for PCI/PnP
devices.
Plug And Play O/S [No]
[Yes]
When set to [Yes] and if you install a Plug and Play operating
system, the operating system configures the Plug and Play devices
not required for boot.
[No]
When set to [No], BIOS configures all the devices in the system.
Advanced PCI/PnP Settings
WARNING: Setting wrong values in below sections
may cause system to malfunction.
Plug And Play O/S
[No]
Crosshair IV Formula BIOS Setup
Advanced
3.5.6
LED Control
Crosshair IV Formula BIOS Setup
Advanced
LED Control
All LED Control
[Enabled]
POST State LEDs
[Enabled]
Voltiminder LED
[Enabled]
CPU LED Selection
[CPU]
NB LED Selection
[NB]
SB LED Selection
[SB]
DDR LED Selection
[DRAM]
All LED Control [Enabled]
Allows you to enable or disable the onboard LEDs control.
Configuration options: [Enabled] [Disabled]
The following items appear only when you set All LED Control to [Enabled].