> For the complete documentation index, see [llms.txt](https://teravolt.gitbook.io/teravolt/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://teravolt.gitbook.io/teravolt/peripherals/usb-to-ttl-converter/pinout.md).

# Pinout

<figure><img src="/files/oeuMR54pfl6qObPb3kNl" alt=""><figcaption></figcaption></figure>

## 4-Pin JST-GH Connector

| Pin | Function | Description                   |
| --- | -------- | ----------------------------- |
| 1   | VCC      | Selected voltage (3.3V or 5V) |
| 2   | TX       | UART transmit                 |
| 3   | RX       | UART receive                  |
| 4   | GND      | Ground                        |

## &#x20;6-Pin JST-GH Connector

| Pin | Function | Description                   |
| --- | -------- | ----------------------------- |
| 1   | RST      | Reset (active low)            |
| 2   | RX       | UART receive                  |
| 3   | TX       | UART transmit                 |
| 4   | VCC      | Selected voltage (3.3V or 5V) |
| 5   | CTS      | Clear to send (optional)      |
| 6   | GND      | Ground                        |