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# Connections & Pinout

## Pinout

All connectors are JST-GH 4p.

<figure><img src="/files/o6zHD63cCatSf2UCXZx0" alt=""><figcaption></figcaption></figure>

<table data-full-width="true"><thead><tr><th width="172.5">Connector</th><th width="158">Pin Number</th><th width="110">Function</th><th>Notes</th></tr></thead><tbody><tr><td>Power</td><td>1</td><td>5v In</td><td>Main Power In</td></tr><tr><td></td><td>2</td><td>3.3v out</td><td>3.3v Out (Keep under 0.2 Amps)</td></tr><tr><td></td><td>3</td><td>Ground</td><td>Main Ground</td></tr><tr><td></td><td>4</td><td>Ground</td><td>Main Ground</td></tr></tbody></table>

<table data-full-width="true"><thead><tr><th width="167.5">Connector</th><th width="158">Pin Number</th><th width="108">Function</th><th>Notes</th></tr></thead><tbody><tr><td>USB</td><td>1</td><td>5v In</td><td>5v Power out for USB Host</td></tr><tr><td></td><td>2</td><td>D-</td><td>USB Data</td></tr><tr><td></td><td>3</td><td>D=</td><td>USB Data</td></tr><tr><td></td><td>4</td><td>Ground</td><td>Main Ground</td></tr></tbody></table>

<table data-full-width="true"><thead><tr><th width="163">Connector</th><th width="150">Pin Number</th><th width="123.5">Function</th><th>Notes</th></tr></thead><tbody><tr><td>Serial</td><td>1</td><td>Tx 0</td><td>Console Serial Port, 56700 Baudrate</td></tr><tr><td></td><td>2</td><td>Rx 0</td><td>Console Serial Port, 56700 Baudrate</td></tr><tr><td></td><td>3</td><td>Tx 1</td><td>Available to the User at /dev/ttyS0</td></tr><tr><td></td><td>4</td><td>Rx 1</td><td>Available to the User at /dev/ttyS0</td></tr></tbody></table>

<table data-full-width="true"><thead><tr><th width="163.5">Connector</th><th width="149">Pin Number</th><th width="127">Function</th><th>Notes</th></tr></thead><tbody><tr><td>WAN/LAN*</td><td>1</td><td>Tx +</td><td>Typically Pin 1 of an RJ45</td></tr><tr><td></td><td>2</td><td>Tx - </td><td>Typically Pin 2 of an RJ45</td></tr><tr><td></td><td>3</td><td>Rx + </td><td>Typically Pin 3 of an RJ45</td></tr><tr><td></td><td>4</td><td>Rx -</td><td>Typically Pin 6 of an RJ45</td></tr></tbody></table>