I have te same issue and this is on an Asus H270M-Plus motherboard. I know Lenovo portables have these kind of tracing elements built in where you can take a subcription with Absolute Software to trace the notebook when stolen. But i have never seen this on a Desktop integrator part like a motherboard.
Also there are no selectable or visible settings in my BIOS (v1605).
I also have the feeling that something is not right here.