Supermicro X9DRG-O-PCIE, User Manual, Page: 89 / 119

Chapter 4: AMI BIOS
4-11
MMCFG BASE
This feature determines the lowest base address that can be assigned to PCI
devices. The lower the address, the less system memory is available (for a 32-bit
OS). The higher the address, the less resources are allocated to PCI devices.
The options are 0x80000000, 0xA0000000, and
0xC0000000
.
IIO 1 PCIe Port Bifurcation Control (Available when a PCI-E device is
installed)
This submenu configures the following Port-Bifurcation control settings which will
determine how the PCI-Express lanes will be distributed between PCI-E ports.
CPU1 Slot6 PCI-E 3.0 x8 Link Speed
Use this item to select the desired type of PCI-Exp Generation support for the
slot indicated above. The options are GEN1, GEN2
, and GEN3 .
CPU1 Slot8/9 PCI-E 3.0 x16 Link Speed
Use this item to select the desired type of PCI-Exp Generation support for the
slot indicated above. The options are GEN1, GEN2
, and GEN3 .
CPU1 Slot10/11 PCI-E 3.0 x16 Link Speed
Use this item to select the desired type of PCI-Exp Generation support for the
slot indicated above. The options are GEN1, GEN2
, and GEN3 .
IIO 2 PCIe Port Bifurcation Control (Available when a PCI-E device is
installed)
This submenu configures the following Port-Bifurcation control settings which will
determine how the PCI-Express lanes will be distributed between PCI-E ports..
CPU2 Slot5 PCI-E 3.0 x8 Link Speed
Use this item to select the desired type of PCI-Exp Generation support for the
slot indicated above. The options are GEN1, GEN2
,
and
GEN3
.
CPU2 Slot3/4 PCI-E 3.0 x16 Link Speed
Use this item to select the desired type of PCI-Exp Generation support for the
slot indicated above. The options are GEN1, GEN2
, and GEN3 .
CPU2 Slot1/2 PCI-E 3.0 x16 Link Speed
Use this item to select the desired type of PCI-Exp Generation support for the
slot indicated above. The options are GEN1, GEN2
, and GEN3 .