Like others, I bought an X550-T2 (direct from Amazon themselves) and the Yottamark is valid, but the MAC doesn't match.
Is this going to be an on-going production problem?
Thank you for posting in Wired Communities. I am sorry to hear what happened and I have sent a PM to you for the Yottamark detail.
You may also refer to the post here https://communities.intel.com/thread/118647 https://communities.intel.com/thread/118647 to contact the Yottmark support for possible similar scenario. Please feel free to reply my PM so that I can better check for you. Thank you.
X550-T2 is a dual port network cards, thus please double check there are two MAC addresses in the device manager. Go to Device Manager->Network adapter-> click on the NIC, do a right click, click on the Property. Go to the Link & Speed Tab, click on Identify the adapter to check the MAC address. Yottamark result shows only one MAC address, you might want to check if one of your MAC address match the Yottamark validation result. Thank you.