@György-Farkas I did mention it previously: @Lazar-Demin said in Contradiction in Omega2 Device MAC Address Allocation: Earlier in the production lifetime of the Omega2 we used to write the MAC addresses like what you're seeing: But I had to confirm the timing of the change There's no advantages to one schema or the other. Remember that both schemas will work just fine. We just chose to standardize to the one mentioned in the docs article.