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Why won't this cable work? Firewire800>Thunderbolt>USB-C. I'm trying to mount an external drive on a Mac Pro 5,1 (Mid-2010). The drive doesn't seem to be getting power. Any tips would be appreciated.
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Amazon.com: LaCie Rugged Thunderbolt USB 3.0 2TB External Hard Drive Portable HDD (STEV1000400) : Electronics
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