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Devices and I/O Ports

Table 1. Devices and I/O ports
ItemOptionsDescription
Active Video

  • Onboard Device (Default)

  • Add-in Device

This feature is available only when the server has an add-in video adapter. When option ROM is set to [Legacy] for both onboard and add-in video adapters, the setting controls which single adapter displays the System Setup utility.

Regardless of this setting, the system boot early video is displayed at the onboard video only, and the management controller remote console shows the onboard video only. This setting does not affect how the operating system (OS) displays its graphical desktop.

PCI 64-Bit Resource Allocation

  • Enabled

  • Disabled

  • Auto (Default)

[Enabled] or [Disabled]: Enable or disable the allocation of 64-bit resources for PCI devices.

[Auto]: Allocate some resources below 4GB for legacy compatibility.

IOMMU

  • Disabled

  • Enabled(Default)

Enable or disable Input/Output Memory Management Unit (IOMMU).

Note
[Disabled] option will be grayed out if APIC Modeis set as [x2APIC]
SRIOV

  • Enabled (Default)

  • Disabled

Enable or disable the support of resource allocation for Single Root I/O Virtualization (SR-IOV) virtual functions during system boot.

PCIe ARI Forwarding

  • Disabled(Default)

  • Enabled

Enable ARI Forwarding for each downstream port.

PCIe Ten Bit Tag Support

  • Disabled(Default)

  • Enabled

Provides information on enabling the PCIe Ten Bit tag for improved performance. Enable the PCIe Ten Bit Tag to increase the number of non posted requests from 256 to 768 for better performance. As latency increases, the increase in unique tags is required to maintain the peak performance at 16 GT/s.

Enable/Disable Onboard Device(s)

N/A

Enable or disable onboard devices or slots.

Enable/Disable Adapter Option ROM Support

N/A

Control Legacy and UEFI-compliant adapter support.

Disabling UEFI/Legacy support may adversely affect pre-boot/boot functions.

Set Option ROM Execution Order

N/A

Set load order for Legacy ROMs.

PCIe Gen Speed Selection

N/A

Choose the generation speed for available PCIe slots.

Override Slot Bifurcation

N/A

Override the slot bifurcation of the physical slot to support the adapter with multiple devices.

Console Redirection Settings

N/A

Configure console redirection and COM port settings.

USB Configuration

N/A

Enable or disable USB storage devices or individual ports.