Computer Hardware User Manual

Chapter 4: AMI BIOS

4-15

Plug & Play OS

Selecting Yes allows the OS to conﬁ gure Plug & Play devices. (This is not required

for system boot if your system has an OS that supports Plug & Play.) Select No to

allow the AMI BIOS to conﬁ gure all devices in the system.

PCI Latency Timer

This feature sets the latency Timer of each PCI device installed on a PCI bus. Select

64 to set the PCI latency to 64 PCI clock cycles. The options are 32, 64, 96, 128,

160, 192, 224 and 248.

PCI IDE Bus Master

When enabled, the BIOS uses PCI bus mastering for reading/writing to IDE drives.

The options are Disabled and Enabled.

PCIE Width

This feature selects the bus width of the motherboard's PCIE slots. The options are

X8X8X8X8 and X16X8X8.

Note: PCI-E Slot 2 (below) will be grayed-out when this item (PCIE Width)

is set to X16X8X8.

PCI Express Slots 1~3 & PCI Slot 4

Use this feature to enable or disable a PCI-E or a PCI slot. The options are Dis-

abled and Enabled.

Load Onboard LAN1 Option ROM/Load Onboard LAN2 Option ROM

Load Onboard LAN3 Option ROM/Load Onboard LAN4 Option ROM (X8STi-

LN4 Only)

This feature is to enable LAN OPROM for PXE. This is to boot computers using a

network interface. The options are Disabled and Enabled.

Load SAS Option ROM (X8STi-3F Only)

This feature is to load the Serial Attached SCSI (SAS) option ROM, if available.

The options are Disabled and Enabled.

XSuper IO Device Conﬁ guration

Serial Port1 Address/ Serial Port2 Address

This option speciﬁ es the base I/O port address and the Interrupt Request address

of Serial Port 1 and Serial Port 2. Select Disabled to prevent the serial port from

accessing any system resources. When this option is set to Disabled, the serial

port physically becomes unavailable. Select 3F8/IRQ4 to allow the serial port to

use 3F8 as its I/O port address and IRQ 4 for the interrupt address. The options