Using castlewood orb 2.2 with a roland 1680

{using castlewood orb 2.2 with a roland 1680}
Right now when connected, the Roland won't turn on. All external powers are plugged in. I'm trying to retrieve old data from these discs. Is there an easier way to get old Roland music trax into my Macbook. I figured technology has advanced enough that proprietary nonsense was a thing of the past...
Thanks for any help...
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