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The full form of SR-IOV is Single Root I/O Virtualization. Some PCI/PCIE devices have multiple virtual functions and each of these virtual functions can be passed to a different virtual machine. SR-IOV is the technology that allows this type of PCI/PCIE passthrough. For example, an 8-port SR-IOV capable network card has 8 virtual functions, 1 for each port. 8 of these virtual functions or network ports can be passed to 8 different virtual machines (VMs). In this article, we will show you how to enable the SR-IOV CPU feature from the BIOS/UEFI firmware of some of the most popular desktop motherboards (i.e. ASUS, ASRock, MSI, and Gigabyte). Table of Contents How to Enable SR-IOV from the BIOS/UEFI Firmware of ASUS Motherboards How to Enable SR-IOV from the BIOS/UEFI Firmware of ASRock Motherboards How to Enable SR-IOV from the BIOS/UEFI Firmware of MSI Motherboards How to Enable SR-IOV from the BIOS/UEFI Firmware of Gigabyte Motherboards Conclusion References How to Enable SR-IOV from the BIOS/UEFI Firmware of ASUS Motherboards To enter the BIOS/UEFI Firmware of your ASUS motherboard, press <Delete> right after pressing the power button of your computer. The BIOS/UEFI Firmware of ASUS motherboards has two modes: “EZ Mode” and “Advanced Mode”. Once you’ve entered the BIOS/UEFI Firmware of your ASUS motherboard, you will be in “EZ Mode” by default. To enable IOMMU/VT-d on your ASUS motherboard, you have to enter the “Advanced Mode”. To enter “Advanced Mode”, press <F7> while you’re in “EZ Mode”. For both AMD and Intel systems, navigate to the “Advanced” tab (by pressing the arrow keys), navigate to “PCI Subsystem Settings”, and set “SR-IOV Support” to “Enabled”. To save the changes, press <F10>, select OK, and press <Enter>. The SR-IOV feature should be enabled. For more information on enabling the SR-IOV feature from the BIOS/UEFI Firmware of your ASUS motherboard, check the BIOS Manual of your ASUS motherboard. How to Enable SR-IOV from the BIOS/UEFI Firmware of ASRock Motherboards To enter the BIOS/UEFI Firmware of your ASRock motherboard, press <F2> or <Delete> right after pressing the power button of your computer. If you’re using a high-end ASRock motherboard, you may find yourself in “Easy Mode” once you enter the BIOS/UEFI Firmware of your ASRock motherboard. In that case, press <F6> to switch to “Advanced Mode”. If you’re using a cheap/mid-range ASRock motherboard, you may not have an “Easy Mode”. You will be taken to “Advanced Mode” directly. In that case, you won’t have to press <F6> to switch to “Advanced Mode”. You will be in the “Main” tab by default. Press the <Right> arrow key to navigate to the “Advanced” tab of the BIOS/UEFI Firmware of your ASRock motherboard. If you have an AMD processor, navigate to “PCI Configuration” and set “SR-IOV Support” to “Enabled”. If you have an Intel processor, navigate to “Chipset Configuration” and set “SR-IOV Support” to “Enabled”. To save the changes, press <F10>, select Yes, and press <Enter>. The SR-IOV feature should be enabled. For more information on enabling the SR-IOV feature from the BIOS/UEFI Firmware of your AsRock motherboard, check the BIOS Manual of your ASUS motherboard. How to Enable SR-IOV from the BIOS/UEFI Firmware of MSI Motherboards To enter the BIOS/UEFI Firmware of your MSI motherboard, press <Delete> right after pressing the power button of your computer. The BIOS/UEFI Firmware of MSI motherboards has two modes: “EZ Mode” and “Advanced Mode”. Once you’ve entered the BIOS/UEFI Firmware of your MSI motherboard, you will be in “EZ Mode” by default. To enable the SR-IOV on your MSI motherboard, you have to enter the “Advanced Mode”. To enter the “Advanced Mode”, press <F7> while you’re in “EZ Mode”. From the “Advanced Mode”, navigate to “Settings”. If you’re using an AMD processor, navigate to “Advanced” > “PCI Subsystem Settings” and set “SR-IOV Support” to “Enabled”. If you’re using an Intel processor, navigate to “Advanced” > “PCIe/PCI Sub-system Settings” and set “SR-IOV Support” to “Enabled”. NOTE: You may not find the “SR-IOV Support” option in the BIOS/UEFI firmware of your MSI motherboard. In that case, you can try updating the BIOS/UEFI firmware version and see if the option is available. To save the changes, press <F10>, select Yes, and press <Enter>. The SR-IOV feature should be enabled. For more information on enabling the SR-IOV feature from the BIOS/UEFI Firmware of your MSI motherboard, check the BIOS Manual of your MSI motherboard. How to Enable SR-IOV from the BIOS/UEFI Firmware of Gigabyte Motherboards To enter the BIOS/UEFI Firmware of your Gigabyte motherboard, press <Delete> right after pressing the power button of your computer. The BIOS/UEFI Firmware of Gigabyte motherboards has two modes: “Easy Mode” and “Advanced Mode”. To enable SR-IOV, you have to switch to “Advanced Mode”. If you’re in “Easy Mode”, press <F2> to switch to “Advanced Mode”. If you have an AMD processor, navigate to the “Settings” tab, navigate to “IO Ports”, and set “SR-IOV Support” to “Enabled”. If you have an Intel processor, navigate to the “Advanced” tab, navigate to “PCI Subsystem Settings”, and set “SR-IOV Support” to “Enabled”. NOTE: On newer Gigabyte motherboards (i.e. Z590, Z690, Z790), the SR-IOV option might be missing. In that case, try enabling Intel virtualization technology VT-x/VT-d and see if the SR-IOV option is displayed on the BIOS/UEFI firmware of your Gigabyte motherboard. To save the changes, press <F10>, select Yes, and press <Enter>. SR-IOV should be enabled for your processor. For more information on enabling SR-IOV on your Gigabyte motherboard, we recommend you to read the “User Manual” or “BIOS Setup Manual” of your Gigabyte motherboard. Conclusion We showed you how to enable the SR-IOV CPU feature from the BIOS/UEFI firmware of some of the most popular desktop motherboards (i.e. ASUS, ASRock, MSI, and Gigabyte). References ASUS ROG Maximus Z690 Hero BIOS Overview ASUS ROG STRIX X570-E Gaming WIFI II BIOS Walk Thru ASRock Bios Optimization! [AMD 7800X3D | X670E Taichi Carrara | XMP PC 5600 CL28 G.Skill | 4090HOF] ASRock Z690 Taichi BIOS Overview SR-IOV on MSI X470 Gaming Pro | MSI Global English Forum Bios Settings 7950x3D 7800x3D [Gigabyte Aorus Elite Ax x670] ASUS PRIME Z490-A BIOS Overview View the full article

The full form of IOMMU is Input Output Memory Management Unit. IOMMU maps the virtual addresses of a device to physical addresses which allows the device to be passed to a virtual machine (VM). VT-D does the same thing as IOMMU. The main difference is that IOMMU is developed by AMD while VT-D is developed by Intel. In this article, we will show you how to enable the IOMMU/VT-d CPU feature from the BIOS/UEFI firmware of some of the most popular desktop motherboards (i.e. ASUS, ASRock, MSI, and Gigabyte). Table of Contents How to Enable IOMMU/VT-d from the BIOS/UEFI Firmware of ASUS Motherboards How to Enable IOMMU/VT-d from the BIOS/UEFI Firmware of ASRock Motherboards How to Enable IOMMU/VT-d from the BIOS/UEFI Firmware of MSI Motherboards How to Enable IOMMU/VT-d from the BIOS/UEFI Firmware of Gigabyte Motherboards Conclusion References How to Enable IOMMU/VT-d from the BIOS/UEFI Firmware of ASUS Motherboards To enter the BIOS/UEFI Firmware of your ASUS motherboard, press <Delete> right after pressing the power button of your computer. The BIOS/UEFI Firmware of ASUS motherboards has two modes: “EZ Mode” and “Advanced Mode”. Once you’ve entered the BIOS/UEFI Firmware of your ASUS motherboard, you will be in “EZ Mode” by default. To enable IOMMU/VT-d on your ASUS motherboard, you have to enter the “Advanced Mode”. To enter “Advanced Mode”, press <F7> while you’re in “EZ Mode”. If you have an AMD processor, navigate to the “Advanced” tab (by pressing the arrow keys), navigate to “AMD CBS”, and set “IOMMU” to “Enabled” from the BIOS/UEFI Firmware of your ASUS motherboard. If you have an Intel processor, navigate to the “Advanced” tab (by pressing the arrow keys), navigate to “System Agent (SA) Configuration”, set “VT-d” to “Enabled”, and set “Control Iommu Pre-boot Behavior” to “Enable IOMMU during boot” from the BIOS/UEFI Firmware of your ASUS motherboard. To save the changes, press <F10>, select OK, and press <Enter>. The IOMMU/VT-d feature should be enabled. For more information on enabling the IOMMU/VT-d feature from the BIOS/UEFI Firmware of your ASUS motherboard, check the BIOS Manual of your ASUS motherboard. How to Enable IOMMU/VT-d from the BIOS/UEFI Firmware of ASRock Motherboards To enter the BIOS/UEFI Firmware of your ASRock motherboard, press <F2> or <Delete> right after pressing the power button of your computer. If you’re using a high-end ASRock motherboard, you may find yourself in “Easy Mode” once you enter the BIOS/UEFI Firmware of your ASRock motherboard. In that case, press <F6> to switch to “Advanced Mode”. If you’re using a cheap/mid-range ASRock motherboard, you may not have an “Easy Mode”. You will be taken to “Advanced Mode” directly. In that case, you won’t have to press <F6> to switch to “Advanced Mode”. You will be in the “Main” tab by default. Press the <Right> arrow key to navigate to the “Advanced” tab of the BIOS/UEFI Firmware of your ASRock motherboard. If you have an AMD processor, navigate to “AMD CBS” > “NBIO Common Options” and set “IOMMU” to “Enabled” from the BIOS/UEFI Firmware of your ASRock motherboard. If you have an Intel processor, navigate to “Chipset Configuration” and set “VT-d” to “Enabled” from the BIOS/UEFI Firmware of your ASRock motherboard. To save the changes, press <F10>, select Yes, and press <Enter>. The IOMMU/VT-d feature should be enabled. For more information on enabling the IOMMU/VT-d feature from the BIOS/UEFI Firmware of your AsRock motherboard, check the BIOS Manual of your ASUS motherboard. How to Enable IOMMU/VT-d from the BIOS/UEFI Firmware of MSI Motherboards To enter the BIOS/UEFI Firmware of your MSI motherboard, press <Delete> right after pressing the power button of your computer. The BIOS/UEFI Firmware of MSI motherboards has two modes: “EZ Mode” and “Advanced Mode”. Once you’ve entered the BIOS/UEFI Firmware of your MSI motherboard, you will be in “EZ Mode” by default. To enable the IOMMU/VT-d on your MSI motherboard, you have to enter the “Advanced Mode”. To enter the “Advanced Mode”, press <F7> while you’re in “EZ Mode”. Navigate to “OC settings”, scroll down to “CPU Features”, and press <Enter>. If you have an AMD processor, set “IOMMU” to “Enabled”. If you have an Intel processor, set “Intel VT-D Tech” to “Enabled”. To save the changes, press <F10>, select Yes, and press <Enter>. The IOMMU/VT-d feature should be enabled. For more information on enabling the IOMMU/VT-d feature from the BIOS/UEFI Firmware of your MSI motherboard, check the BIOS Manual of your MSI motherboard. How to Enable IOMMU/VT-d from the BIOS/UEFI Firmware of Gigabyte Motherboards To enter the BIOS/UEFI Firmware of your Gigabyte motherboard, press <Delete> right after pressing the power button of your computer. The BIOS/UEFI Firmware of Gigabyte motherboards has two modes: “Easy Mode” and “Advanced Mode”. To enable IOMMU/VT-d, you have to switch to the “Advanced Mode” of the BIOS/UEFI Firmware of your Gigabyte motherboard. If you’re in “Easy Mode”, you can press <F2> to switch to “Advanced Mode” on the BIOS/UEFI Firmware of your Gigabyte motherboard. Use the arrow keys to navigate to the “Settings” tab. If you have an AMD processor, navigate to “Miscellaneous” and set “IOMMU” to “Enabled” from the BIOS/UEFI Firmware of your Gigabyte motherboard. If you have an Intel processor, navigate to “Miscellaneous” and set “VT-d” to “Enabled” from the BIOS/UEFI Firmware of your Gigabyte motherboard. To save the changes, press <F10>, select Yes, and press <Enter>. IOMMU/VT-d should be enabled for your processor. For more information on enabling IOMMU/VT-d on your Gigabyte motherboard, we recommend you to read the “User Manual” or “BIOS Setup Manual” of your Gigabyte motherboard. Conclusion We showed you how to enable the IOMMU/VT-d CPU feature from the BIOS/UEFI firmware of some of the most popular desktop motherboards (i.e. ASUS, ASRock, MSI, and Gigabyte). References ROG STRIX Z690 series BIOS Manual ( English Edition ) ASUS ROG Maximus Z690 Hero BIOS Overview ROG STRIX X670E Series BIOS Manual ( English Edition ) ASRock Bios Optimization! [AMD 7800X3D | X670E Taichi Carrara | XMP PC 5600 CL28 G.Skill | 4090HOF] ASRock Z690 Taichi BIOS Overview MSI MEG Z690 ACE BIOS Overview Pomoc techniczna cz. 1 – Ustawianie optymalne biosu i OC w płycie głównej MSI B450 Gaming Plus Max Bios Settings 7950x3D 7800x3D [Gigabyte Aorus Elite Ax x670] GIGABYTE Z690 Aorus Elite DDR4 Motherboard BIOS Overview View the full article

Today, Amazon Web Services (AWS) announced the general availability of two new security and compatibility features, NitroTPM, a Trusted Platform Module (TPM) 2.0 and Unified Extensible Firmware Interface (UEFI) Secure Boot in Amazon EC2. These features make it possible for customers to use TPM-dependent applications in their EC2 instances. View the full article