Thanks for your clarification.

Your motherboard is too old, it does not have the necessary interface to connect this module to the board.

This module does not fit on your board, you need this one: https://www.scan.co.uk/products/gigabyte-gc-tpm-20-trusted-platform-module-compute-securely See manual p. 31. https://download1.gigabyte.com/Files/Manual/mb_manual_ga-x79-ud3_e.pdf?v=0b2ed21c1469febfbacf3b27ae7babe5 When it comes to Windows 11, it is almost certain that the CPU is the problem. Here is the list to check: https://docs.microsoft.com/en-us/windows-hardware/design/minimum/supported/windows-11-supported-intel-processors There are lots of instructions on the internet on how to install Windows 11 anyway.

Yes, and maybe you don't even need to buy such a module. Currently, there are very few mainboards or none that have a TPM 2.0 module installed coming directly from the factory when it's not a buisnessdevice. This refers to mainboards for self-build PCs with mainboards of the size of ATX/mATX. However, some offer the option of buying a TPM 2.0 module as a separate module and retrofitting it on the board in a designated slot ( https://en.wikipedia.org/wiki/Trusted_Platform_Module#/media/File:TPM_Asus.jpg). In addition to physical TPM modules, there are also fTPM (firmware TPM, called PTT at Intel). Intel and AMD have been integrating TPM version 2.0 into their CPUs for several years. To be able to use this, the BIOS of the PC/notebook must support it and it must be activated there. Intel CPUs from the 8th generation onwards usually have TPM integrated. Intel calls this PTT (Platform Trust Technology). AMD has integrated TPM as fTPM in the CPUs since the use of Socket AM4 from around 2016. List of Intel CPUs that officially support Windows 11  https://docs.microsoft.com/en-us/windows-hardware/design/minimum/supported/windows-11-supported-intel-processors List of AMD CPUs that officially support Windows 11  https://docs.microsoft.com/en-us/windows-hardware/design/minimum/supported/windows-11-supported-amd-processors FAQ about TPM 2.0 https://www.heise.de/select/ct/2021/16/2031014552744306693 Before buying a TPM module for the mainboard, which might be unnecessary, you should check whether the BIOS allows fTPM / PTT via CPU and whether this only has to be activated. Help pages for (f)TPM from various mainboard manufacturers: ASUS https://www.asus.com/ch-de/support/FAQ/1046215/ MSI  https://www.msi.com/blog/How-to-Enable-TPM-on-MSI-Motherboards-Featuring-TPM-2-0 Gigabyte  https://www.gigabyte.com/Press/News/1925 Asrock  https://www.asrock.com/support/faq.asp?id=500

Perhaps a TPM module is already installed on the mainboard (onboard), activate it under BIOS -> Security -> Security Device Support (Enable). Then restart and open Windows with the command "Windows key" + "R" in the field "tpm.msc". The information on the TPM module should then be there. (Alternative: youtube.com/watch?v=6myfVPI...)

Hello, Normally your motherboard does not need an adapter, have you looked in the bios and enabled PTT. Have you done the Microsoft test? But don't rush, many settings will change by then.