Buy computer parts online
I am also having trouble finding the mini-ITX motherboard to fit the case. I plan to use X470 chipset. If I can find X570, it would be also fine. But now I can only find B450 from pc-Canada. B450 is ok with 3700X. But I don't really want to use it. If I choose B450, probably I will downgrade my CPU a little to 3600X.
Basically I checked websites: Newegg, memory express, Mike's computer shop, canadacomputers, pc-Canada and amazon. Does anyone know any other online websites in Canada or in the United states that can ship to Canada?