Need for your help

Hi all here,
I'm trying to get an UltraStudio Mini Recorder working with a laptop running Ubuntu. It's not working and I'm trying to figure out where the problem is. I notice there is a small hole in the case next to the thunderbolt port and I'm wondering if there is a LED behind that hole that indicates a successful connection. Is this the case or not.

Thanks for your time,

Yep, if its running correctly you'll see that led illuminate.