Re: [CentOS] USB 2.0 device on a USB 3.0 plug

On 2/16/2017 1:12 PM, Gordon Messmer wrote:

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 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-smal... (male)

http://p.globalsources.com/IMAGES/PDT/BIG/663/B1079644663.jpg (female)