Clues found in the beta version of macOS Sierra point to upcoming Macs including support for faster connectivity in the form of USB 3.1 Gen 2 ports.9 to 5 Mac spotted text strings in macOS Sierra that mention SuperSpeed Plus, which is what USB 3.1 Gen 2 is also called – it's a step up from plain SuperSpeed or USB 3.1 Gen 1 as supported by current MacBooks.Indeed,...