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mac pro sierra usb hub malfunction

  1. Z

    My 4,1>5,1 with Sierra: USB hubs no longer work?

    Weird stuff, my (bus-powered) USB hubs worked fine with all previous iterations of OSX, but I installed Sierra a few days ago, and now they either work poorly or not at all. I contacted Apple support but that didn't get me very far. Anybody else experience this? What gives?