For ADAT connections, the Hosa/Livewire OPT-100 series cables always latch solidly in my H8000FW. I am confident they will work for
everybody. Anything with "OPT" in the part number will work, like OPT-102, OPT-103, OPT-106, etc.
We had a thread about it a couple years ago, you can read more here –