Pci Express Configuration; Me Subsystem Configuration - EVGA P55 LE User Manual

PCI Express Configuration

This option menu will allow you to set advanced PCI Express options, such as
Payload size. It is not recommended to adjust these settings.
Intel VT-d Configuration
This option menu allows you to enable, or disable, Virtualization Technology
for Directed I/O. This setting can help improve performance in a virtualized
environment, it is recommended to leave this disabled for standard system
setups.
The Advanced Chipset Features menu also allows you to enable/disable some
onboard devices, they are as follows:
HD Audio Controller

Use this function to set the onboard audio function. It is recommended to
leave this enabled, unless you are using an external sound, add-on sound card.
IEEE1394

This function allows you to enable or disable the IEEE1394 (Firewire)
interface.
LAN Controller

This function allows you to enable or disable the onboard primary network
controller. It is recommended to leave this enabled, unless you are using an
external Network Controller, such as an EVGA Killer Xeno card.
PE1 Slot

This function allows you to enable or disable the PE1 Slot.

ME Subsystem Configuration

Select this option to change advanced ME Subsystem settings.