Thank you very much for bringing up your concern about Thunderbolt support. Would you please provide us the model of the Server Board you are using so we can double check that information for you?
Thanks for the update. We are still researching on your inquiry and will proceed to contact you back as soon as possible.
Following up on your case, this type of information is usually provided through the OEM which in this case it would be Supermicro. We are trying to confirm if we have a team that particularly supports Thunderbolt.
Thunderbolt™ is a system ingredient that is customized by each OEM differently on their platforms.
Intel provides firmware and driver updates directly to OEMs, but it is up to each OEM to preform validation testing and determine how and when those updates get rolled out to their customers on their public websites.
We regret that Intel cannot provide firmware/drivers that has not been validated by the OEM for release on their platform designs.
Please direct any product questions to the PC or device OEM.