You are right but the only systems I have seen that support it are servers or expensive workstations from Ampere and maybe 1 or 2 others. I feel like 99% of the ARM based computing devices that people can buy for under $2000 have non standard boot systems. Do any of the Qualcomm ARM based laptops support an open boto standard?

In contrast I feel like 99% of x86 based computing devices under $2000 have standard boot systems where anyone can boot windows or Linux on them with minimal issues.

Please point me to a cost effective general purpose Arm computer that uses SBSA.

I know this board and it is not general purpose. This is not designed to watch videos, play games or browse the web. Again, show me a general purpose Arm computer that is made for the average user.

It looks like something for a router or network switch. No graphics but it does have an open PCIE x8 slot. The ARM A72 is now a 9 year old CPU core. The reviews of this board are all from 4 years ago. It looks like their newer similar products have a Ryzen core that is a lot faster.

Here is an Ampere workstation but it is $3300. In my other post in this thread I mentioned $2000 as the price limit. Most consumers are not going to spend more than that on a computer.

https://system76.com/desktops/thelio-astra-a1.1-n1/configure