System 5 and USB to RS422
I have tried to connect my System 5 to ProTools with a Keyspan USA-28X, but my Mac inside ProTools does not see the Keyspan. Is there a driver that would work for my OS or is the Keyspan just for older system? And if so, what would be the nest step? Best regards Ulf
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Mac Pro 2x3,46 GHz 6-Core OS 10.13.6
System 5 SC264D, CM408x3, CM402, CM401
AM713, MA703, ML530, MC524, FC726
ProTools Ultimate 2019.5, Avid MTRX
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