Chapter 4: UEFI BIOS
93
Chipset Configuration
Note:
Setting incorrect values in the following two submenus may cause
system mal-
function
.
North Bridge
IIO Configuration
IIO Configuration
Isoc Mode
This feature controls Isoc mode support. The options are Disabled, Enabled, and
Auto
.
CPU Configuration
IOU0 (IIO PCIe Br1)
This feature controls the port bifurcation for the selected slot(s). The options are
[x4x4x4x4], [x4x4x8], [x8x4x4], [x8x8], [x16], and
Auto
.
IOU1 (IIO PCIe Br2)
This feature controls the port bifurcation for the selected slot(s). The options are
[x4x4x4x4], [x4x4x8], [x8x4x4], [x8x8], [x16], and
Auto
.
IOU2 (IIO PCIe Br3)
This feature controls the port bifurcation for the selected slot(s). The options are
[x4x4x4x4], [x4x4x8], [x8x4x4], [x8x8], [x16], and
Auto
.
CPU SLOT 1 PCI-E 3.0x8 (INx16), CPU SLOT 3 PCI-E 3.0x8 (INx16),
CPU SLOT 5 PCI-E 3.0x8 (INx16), CPU SLOT 7 PCI-E 3.0x16, U.2_1, and
U.2_2 (check)
Note:
The features shown above are subject to change depending on the device
plugged into the motherboard.
Link Speed
This feature controls the link speed for this PCIe port. The options are
Auto
, Gen 1
(2.5 GT/s), Gen 2 (5GT/s), and Gen 3 (8 GT/s).
PCI-E Port Max Payload Size
This feature controls this PCIe port's maximum payload size. If possible set to 256B.
The default is
Auto
.
Note:
The following submenus only display when using Core i9 7980X/7900X or i7 7900X/7820X/7800X CPUs. Core i7 7740X
and i5 7640X CPUs display different options.
