All perfect working order and well looked after in my home studio. If you're not familiar with this it's a way of providing 8 extra mic pre amp inputs to your studio via adat or line level into your interface.
I think perhaps adat this is the most common use of it as many people are not using their spare adat input on their audio interface. Each input has an optional 48v phantom power for microphones that need it. I no longer need mine because I bought some new kit recently.I have the original box it came in by the way.