Owners Manual

Option Description
Internal SD Primary
Card
When Redundancy is set to Disabled, either one of the SD card can be selected to present itself as mass storage
device by setting it to be primary card. By default primary SD card is selected to be SD Card 1. If microSD Card 1 is
not present, then the controller selects the SD Card 2 as the primary card.
OS Watchdog
Timer
If your system stops responding, this watchdog timer aids in the recovery of your operating system. When this
option is set to Enabled, the operating system initializes the timer. When this option is set to Disabled (the
default), the timer does not have any eect on the system.
Memory Mapped
I/O above 4 GB
Enables or disables the support for the PCIe devices that require large amount of memory. Enable this option only
for 64-bit operating systems. This option is set to Enabled by default.
Memory Mapped
I/O above Base
When set to 12 TB, the system maps the MMIO base to 12 TB. Enable this option for an OS that requires 44 bit
PCIe addressing. When set to 512 GB, the system maps the MMIO base to 512 GB, and reduces the maximum
support for memory to less than 512 GB. Enable this option only for the 4 GPU DGMA issue. This option is set to
56 TB by default.
Slot Disablement Enables or disables the available PCIe slots on your system. The slot disablement feature controls the conguration
of the PCIe cards installed in the specied slot. Slots must be disabled only when the installed peripheral card
prevents booting into the operating system or causes delays in system startup. If the slot is disabled, both the
Option ROM and UEFI drivers are disabled. Only slots that are present on the system will be available for control.
Table 35. Slot Disablement
Option Description
Slot 1
Enables or disables the PCIe slot 1. This option is set to
Enabled by default.
Slot 3
Enables or disables or only the boot driver is disabled
for the PCIe slot 3. This option is set to Enabled by
default.
Slot 4
Enables or disables or only the boot driver is disabled
for the PCIe slot 4. This option is set to Enabled by
default.
Slot 5
Enables or disables or only the boot driver is disabled
for the PCIe slot 5. This option is set to Enabled by
default.
Slot 6
Enables or disables or only the boot driver is disabled
for the PCIe slot 6. This option is set to Enabled by
default.
Slot Bifurcation Allows Platform Default Bifurcation, Auto discovery of Bifurcation and Manual bifurcation Control. The default
is set to Platform Default Bifurcation. The slot bifurcation eld is accessible when set to Manual bifurcation
Control and is grayed out when set to Platform Default Bifurcation or Auto discovery of Bifurcation.
Table 36. Slot Bifurcation
Option Description
Slot 1 Bifurcation
X4 or X8 or X4X4X4X8 or X8X4X4 Bifurcation
Slot 3 Bifurcation
X4 or X8 or X4X4X4X8 or X8X4X4 Bifurcation
Slot 4 Bifurcation
X16 or X4 or X8 or X4X4X4X8 or X8X4X4 Bifurcation
Slot 5 Bifurcation
X4 Bifurcation or X8 Bifurcation
Pre-operating system management applications 43