Afaik, almost every Ryzen mainboard supports ECC. Just randomly picked a budget AM5 mainboard from Asrock and it has ECC support: https://www.asrock.com/mb/AMD/

Afaik, almost every Ryzen mainboard supports ECC. Just randomly picked a budget AM5 mainboard from Asrock and it has ECC support: https://www.asrock.com/mb/AMD/B650E%20Taichi/index.asp#Specification https://www.asrock.com/mb/AMD/B650E%20Taichi/index.asp#Speci...