I was trying to use the 9-pin ADAT sync connection between 2 computers, each with their own Aark 24 card to send 8 channels of audio from a slave DAW computer, to my main DAW computer, but I never did get it working…no audio sound from it. On this particular Aark 24 card, the 9-pin ADAT connection labled ‘Sync’ …is this ONLY a Sync & NOT designed to carry any audio???