USB 3 Type C pinouts and signals

USB Type-C is a USB specification for a small 24-pin reversible-plug connector for USB devices and USB cabling.

The USB Type-C Specification 1.0 was published by the USB Implementers Forum and was finalized in August 2014. It repeats roughly the same time as the USB 3.1 specification.

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.

The USB Type-C connectors can connect both hosts and devices. This connector is vaery small and become a very polular in various mobile devices.

USB 3 Type C pinout

USB3 Type C Drawing
Pin Name Direction Color Description
A1 GND   white Ground
A2 SSTXp1+ —» blue SuperSpeed transmitter (pair 1)
A3 SSTXp1- —» yellow SuperSpeed transmitter (pair 1)
A4 VBUS   red Bus power (+5V)
A5 CC1   black Configuration channel 1
A6 D+ «—» green USB 2.0 data
A7 D- «—» white USB 2.0 data
A8 SBUS1     Sideband use (SBU)
A9 VBUS   red Bus power (+5V)
A10 SSRXp1+ «— purple SuperSpeed receiver (pair 1)
A11 SSRXp1+ «— orange SuperSpeed receiver (pair 1)
A12 GND   white Ground
B1 GND   white Ground
B2 SSRXp2+ «— purple SuperSpeed receiver (pair 2)
B3 SSRXp2- «— orange SuperSpeed receiver (pair 2)
B4 VBUS   red Bus power (+5V)
B5 CC2   black Configuration channel 2
B6 D+ «—» green USB 2.0 data
B7 D- «—» white USB 2.0 data
B8 SBUS2     Sideband use (SBU)
B9 VBUS   red Bus power (+5V)
B10 SSTXp1- —» blue SuperSpeed transmitter (pair 2)
B11 SSTXp1+ —» yellow SuperSpeed transmitter (pair 2)
B12 GND   white Ground