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It looks to me like that board simply doesn't support ECC. The specs on the ASUS web site specifically say the supported memory is non-ECC RAM. There's another thread here confirming this: https://smallformfactor.net/forum/threads/does-asus-rog-strix-x570-i-gaming-supports-ecc-memory.14514/I have successfully used ECC on a number of X570/B550 motherboards:Asus X570 Prime Pro/CSM (ATX)Asus TUF Gaming B550M-Plus (MATX)Asrock B550M Steel Legend (MATX)Gigabyte X570 Aorus Master (ATX)Gigabyte B550I Aorus Pro AX (ITX)In all of the above, the specs mention ECC.The only problem I encountered was that 4 sticks of 16Gb 3200Mhz ECC RAM did not work out of the box; this was fixed by manually setting the speed to 3000MHz.
It looks to me like that board simply doesn't support ECC. The specs on the ASUS web site specifically say the supported memory is non-ECC RAM. There's another thread here confirming this: https://smallformfactor.net/forum/threads/does-asus-rog-strix-x570-i-gaming-supports-ecc-memory.14514/
I have successfully used ECC on a number of X570/B550 motherboards:
In all of the above, the specs mention ECC.
The only problem I encountered was that 4 sticks of 16Gb 3200Mhz ECC RAM did not work out of the box; this was fixed by manually setting the speed to 3000MHz.
