All AMD ryzen support ECC
Yep.... all of them. The 'PRO' models are 'certified', but all the cpu's work with ECC. Must be unbuffered ecc, not registered. And I've got a pair of 3600's running it, and one of them just started complaining about corrections about 2 weeks ago... So I'm gonna replace the RAM as soon as I scrounge up the 500 for a pair of 32's.
Note: Motherboard BIOS must also support it.