SuperMicro’s A2SDi-H-TF :

 

And although there are 4 fan headers, this is a Mini-ITX (!) board that runs a cool 25W (i.e. fanless!!!).

 

There’s an entire series of them this year from SuperMicro, all having slightly different configurations.

 

I know I’m getting old, but this is as incredible to me as my current equipment would have been to 10- or 20-years-ago me.

 

-Adam