Reference Guide

Table 150. BIOS settings supported in Dell Command | Monitor 10.5 (continued)
BIOS Settings Name Description Supported
Operating
System(s)
The remaining and mutually-exclusive options allow explicit
bifurcation configuration of the CPU's PCIe port.
Possible values are:
● Auto
● 1x16
● 2x8
● 1x8+2x4
PCI Bus
Sets the maximum number of PCI bus count for the system.
Possible values are:
● 64
● 128
● 256
Windows, Linux
PCIe Bus Allocation PCIe Bus Allocation controls on how the PCIe bus
resources are allocated among the PCIe SLOTs.
Possible values are:
● Default
● Optimize for Thunderbolt
● Option1
● Option2
● Option3
Windows, Linux
Pcie Link Speed This feature in BIOS setup allows you to select the
maximum PCIe link speed within the system. Available
options are Auto, Gen1, Gen2, Gen3, and Gen4.
Setting the system to Auto option, allows the devices
(if capable) to obtain the maximum speed for hardware
configuration.
Setting the system to Gen1 changes the device capabilities
to use the 1.1 versions from the capabilities list. Adjusting
this setting improves the compatibility with older PCIe add-
in adapters.
Possible values are: Auto, Gen 1, Gen 2, Gen 3, and Gen 4
Windows, Linux
PCIe RSA Enables or Disables the Reliability Availability Serviceability
(RSA) support on PCIe devices.
Possible values are:
● Disabled
● Enabled
Windows, Linux
Pci Resource Allocation Ratio Allocates PCI resources, buses, memory-mapped I/O
(MMIO) space, and I/O space. If set to Allocate Evenly,
equal amount of memory is allocated to all the resources
when two CPUs are installed. When set to Allocate More
to CPU1, larger amount of device-specific memory is
allocated, which in turn reduces the usable memory on a
system with a 32-bit operating system.
Possible values are:
● Allocate Evenly
● Allocate More to CPU1
Windows
BIOS settings supported in Dell Command | Monitor 10.5 279