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USB 3 Pinout (Type A and Type B). Signals and wire colors

USB 3 pinouts and signals. Connector types

USB 3.0 is the third major version of the Universal Serial Bus (USB) standard for interfacing computers and electronic devices. USB 3.0 combines USB 2.0 bus and new SuperSpeed bus with transfer rate up to 5.0 Gbit/s, which is about ten times faster than the USB 2.0 standard. USB 3.0 connectors are usually distinguished from their USB 2.0 counterparts by blue color-coding of the receptacles and plugs.

USB 3.1 is the successor standard (USB 3.1 Gen 2), was released in July 2013 with the new transfer mode SuperSpeed+ that can transfer data at up to 10 Gbit/s (1.25 GB/s, twice the rate of USB 3.0).

Communication is full-duplex during SuperSpeed. In the compatibility mode (USB 1.0 or USB 2.0) communication is half-duplex, with direction controlled by the host.

USB 3 (Type A) pinout

USB3, Type A, Male, Drawing USB3, Type A, Male, Example
PinNameDirectionColorDescription
1VBUS red+5 V power
2D-←→whiteUSB 2.0 Data -
3D+←→greenUSB 2.0 Data +
4GND blackGround
5StdA_SSRX-blueSuperSpeed receiver
6StdA_SSRX+yellowSuperSpeed receiver
7GND_DRAIN groundGround
8StdA_SSTX-purpleSuperSpeed transmitter
9StdA_SSTX+orangeSuperSpeed transmitter

USB 3 (Type B) pinout

USB3, Type B, Male, DrawingUSB3, Type A, Female, Example
PinNameDirectionColorDescription
1VBUS red+5 V power
2D-←→whiteUSB 2.0 Data -
3D+←→greenUSB 2.0 Data +
4GND blackGround
5StdB_SSTX-blueSuperSpeed transmitter
6StdB_SSTX+yellowSuperSpeed transmitter
7GND_DRAIN groundGround
8StdB_SSRX-purpleSuperSpeed receiver
9StdB_SSRX+orangeSuperSpeed receiver

USB 3 Micro-B pinout

USB3, Micro, Male, Drawing
PinNameDirectionColorDescription
1VBUS red+5 V power
2D-←→whiteUSB 2.0 Data -
3D+←→greenUSB 2.0 Data +
4ID anyOTG ID
5GND blackGround
6StdB_SSTX-blueSuperSpeed transmitter
7StdB_SSTX+yellowSuperSpeed transmitter
8GND_DRAIN groundGround
9StdB_SSRX-purpleSuperSpeed receiver
10StdB_SSRX+orangeSuperSpeed receiver

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