> For the complete documentation index, see [llms.txt](https://docs.xbstation.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.xbstation.com/xblink-sat/user-manual/getting-started/interfaces.md).

# Interfaces

## Interface Function Map

<figure><img src="/files/jClI31TzJ2RK9vemXMMs" alt=""><figcaption><p>XBLink SAT - Interfaces</p></figcaption></figure>

## Connectors

<table data-header-hidden><thead><tr><th width="141">ID</th><th>Name</th><th>Connector</th><th>Description</th></tr></thead><tbody><tr><td><strong>ID</strong></td><td><strong>Name</strong></td><td><strong>Connector</strong></td><td><strong>Description</strong></td></tr><tr><td>J1</td><td>USB</td><td>USB Type-C</td><td>External Hardware (Coral AI, Payload, Microhand, Ethernet...)</td></tr><tr><td>J2</td><td>USB</td><td>USB Type-C</td><td>External Hardware (Coral AI, Payload, Microhand, Ethernet...)</td></tr><tr><td>J3</td><td>COM1/AUX</td><td>JST GH 6pin</td><td>Connect Flight controller or extend payload</td></tr><tr><td>J4</td><td>CTRL</td><td>JST GH 9pin</td><td>Sony Camera or other USB devices)</td></tr><tr><td>J5</td><td>GPS</td><td>JST GH 6pin</td><td><p>Connect to GPS, Trigger GPS and</p><p>UART 3</p></td></tr><tr><td>J6</td><td>UPGR</td><td>Micro USB</td><td>Upgrade Firmware</td></tr><tr><td>J7</td><td>ETH</td><td>JST GH 5pin</td><td>Ethernet 100 Base-T</td></tr><tr><td>J9</td><td>Power</td><td>Micro-Lock Plus 4pin</td><td>Power Input</td></tr><tr><td>J10</td><td>COM2</td><td>JST GH 3pin</td><td>Custom Winch port</td></tr></tbody></table>

## Pinout

#### COM1/AUX (J3)

| **Pin** | **Description**   |
| ------- | ----------------- |
| 1       | VBUS 5V 2A        |
| 2       | UART1\_RX (ttyS0) |
| 3       | UART1\_TX (ttyS0) |
| 4       | Pixhawk\_Trigger  |
| 5       | Hotshow\_Out      |
| 6       | GND               |

#### CTRL (J4) - Not ready

#### GPS (J5) ) - Not ready

#### ETH(J7) - Ethernet 100 Base-T

| **Pin** | **Description** | **Item** |
| ------- | --------------- | -------- |
| 1       | TRD0\_P         | TX+      |
| 2       | TRD0\_N         | TX-      |
| 3       | Ground pin6     | GND      |
| 4       | TRD0\_P         | RX+      |
| 5       | TRD0\_N         | RX-      |

**Note:** An Ethernet standard that transmits at 100 Mbps.

#### Power(J9)

| **Pin** | **Description** |
| ------- | --------------- |
| 1       | GND             |
| 2       | GND             |
| 3       | 7-30V Input     |
| 4       | 7-30V Input     |

#### COM2(J10)

|         | Description         |
| ------- | ------------------- |
| **Pin** | **Description**     |
| 1       | UART2\_RX (ttyAMA4) |
| 2       | UART2\_TX (ttyAMA4) |
| 3       | GND                 |