Most computers with Windows 10 can upgrade to Windows 11 in a supported or unsupported fashion.
This includes desktops, laptops, and tablets.
Unsupported installations may not benefit from the improvements in performance, reliability, and security.
Unsupported installations can be performed on computers with Legacy BIOS, Drive MBR, no secure boot, no TPM, etc.
https://blogs.windows.com/windows-insider/2021/08/27/update-on-windows-11-minimum-system-requirements-and-the-pc-health-check-app/
https://support.microsoft.com/en-us/windows/installing-windows-11-on-devices-that-don-t-meet-minimum-system-requirements-0b2dc4a2-5933-4ad4-9c09-ef0a331518f1
https://www.elevenforum.com/t/bypass-windows-11-tpm-2-0-and-cpu-system-requirements.1989/
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