Please see this link: Windows 11 Supported Systems    Windows 11 is not officially supported on the R1, but maybe someone in the Windows  11 forum has an option for you.
Hi everyone, With the TPM requirement on Windows 11 I've been trying to find out if the ASM100 R1 even has a TPM header to potentially install a TPM device, and if so, what type of TPM I'd need. This has been giving me a headache for the last couple weeks, any help would be vastly appreciated. The Baseboard is manufactured by Dell, model: 0j8h4r Thanks   
Alienware asm100 TPM