[coffeeman]

Hi Lance and Eric, I finally managed to get the SSL Delta Link to work with Pro Tools 12.7.1 via the HD Native Thunderbolt. The issues were (1) length of the Digilink Cable and (2) the fact that my Delta Link only had version 1.37 of the firmware. I had to find an old 32 bit based computer to upgrade the firmware to version 2 (latest version) and then it finally worked. With both Digilink outputs connected it seems that I have the ability to run my full complement of I/O, that is 16 analog in and out and 16 digital in and out.

Thanks once again for your assistance. Hopefully, if someone has a similar issue in the future, they will benefit from this post.

Cheers.