USB Type-C Pinout
USB Type-C Pinout Overview
The USB Type-C connector consists of 24 pins arranged in a symmetrical double-sided layout, divided into two rows (A and B). Its design supports power delivery, high-speed data transfer, and alternate modes for video and audio transmission.
USB Type-C Pinout Diagram
The USB pins are identified as follows.
USB Type-C Pin Mapping
Below is a detailed breakdown of the USB-C pinout:
| Description | Signal A | Pin A | Pin B | Signal B | Description |
|---|---|---|---|---|---|
| Ground | GND | A1 | B12 | GND | Ground |
| SuperSpeed differential pair 1 TX, positive | TX1+ | A2 | B11 | RX1+ | SuperSpeed differential pair 1 RX, positive |
| SuperSpeed differential pair 1 TX, negative | TX1- | A3 | B10 | RX1- | SuperSpeed differential pair 1 RX, negative |
| Bus Power | VBUS | A4 | B9 | VBUS | Bus Power |
| Configuration channel | CC1 | A5 | B8 | SBU2 | Sideband use |
| USB 2.0 differential pair, position 1, positive | D1+ | A6 | B7 | D2- | USB 2.0 differential pair, position 2, negative |
| USB 2.0 differential pair, position 1, negative | D1- | A7 | B6 | D2+ | USB 2.0 differential pair, position 2, positive |
| Sideband use | SBU1 | A8 | B5 | CC2 | Configuration channel |
| Bus Power | VBUS | A9 | B4 | VBUS | Bus Power |
| SuperSpeed differential pair 2 RX, negative | RX2- | A10 | B3 | TX2- | SuperSpeed differential pair 2 TX, negative |
| SuperSpeed differential pair 2 RX, positive | RX2+ | A11 | B2 | TX2+ | SuperSpeed differential pair 2 TX, positive |
| Ground | GND | A12 | B1 | GND | Ground |
Pin Functions Explained
- Power (VBUS): Delivers power to connected devices, supporting up to 240W with USB Power Delivery.
- Ground (GND): Provides return paths for power.
- SuperSpeed Lanes (TX and RX pairs): Enable high-speed data transfers.
- USB 2.0 (D+ and D-): Support backward compatibility with USB 2.0 devices.
- Configuration Channel (CC): Handles cable orientation, mode negotiation, and power delivery communication.
- Sideband Use (SBU): Supports alternate modes such as DisplayPort, HDMI, and audio.