USB 3 Micro-B connector
USB 3.0 also introduced a new Micro-B cable plug, which consists of a standard USB 1.x/2.0 Micro-B cable plug, with additional 5-pin plug stacked on side of it. That way, USB 3.0 Micro-A host connector preserved its backward compatibility with the USB 1.x/2.0 Micro-B cable plugs. However, it is not possible to plug a USB 3.0 Micro-B plug into a USB 2.0 Micro-B receptacle, due to a physically larger connector.
|2||USB D-||USB 2.0 differential pair|
|3||USB D+||USB 2.0 differential pair|
|4||OTG ID||USB OTG ID for identifying lines|
|6||USB3 SSTX-||USB 3.0 signal transmission line|
|7||USB3 SSTX+||USB 3.0 signal transmission line|
|9||USB3 SSRX-||USB 3.0 signal receiving line|
|10||USB3 SSRX+||USB 3.0 signal receiving line|
USB 3.0 receptacles are backward compatible with USB 2.0 connectors.