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For those who believe there's nothing like the Intel ME on the Red side, you're sorely mistaken. In fact, we know even less about AMD's Intel ME counterpart called the Platform Security Processor. It's a separate ARM process running proprietary code.

https://en.wikipedia.org/wiki/AMD_Platform_Security_Processor

If you'd like to add on to this stub, feel free to add stuff like this:

https://www.tomshardware.com/news/psptool-amd-secure-technology-psp-firmware,39590.html

https://www.amd.com/en/technologies/security