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On 02/16/2017 12:28 PM, John R Pierce wrote: > USB 1 and 2 used 4 pins. USB 3 ports have an ADDITIONAL 5 pins, the > original 4 are used for USB 1/2 operation, the new 5 only for USB 3 > operation. they are effectively two completely independent controllers. Do you mean USB type C? USB 3 is supported and most commonly uses type A plugs & ports, which should support older

...ype C? USB 3 is supported and most commonly uses > type A plugs & ports, which should support older devices. look very closely at a USB 3.0 port, with the 'blue' tongued A connector, and you'll see 5 additional pins in there behind the standard USB1/2 4 pins. https://files.cablewholesale.com/mailimages/usb-30-type-a-connector-det-small.jpg (male) http://p.globalsources.com/IMAGES/PDT/BIG/663/B1079644663.jpg (female) -- john r pierce, recycling bits in santa cruz