> For the complete documentation index, see [llms.txt](https://docs.ceruleansonar.com/c/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ceruleansonar.com/c/ethernet-rov-locator/connecting-and-powering-your-rovle-ethernet-receiver-or-transceiver/rovl-wiring/rovl-e-pc-board-internal-connections/jst-gh-connector-pin-1-identification.md).

# JST-GH Connector Pin 1 Identification

Cerulean follows the [Blue Robotics Connector Standard](https://bluerobotics.com/learn/wl-connector-standard/) where possible. Most connectors are JST GH series connectors. The diagram below shows how to find pin 1 on a GH connector.

<figure><img src="/files/bT9MQku0wPPDs3mXvmPJ" alt=""><figcaption></figcaption></figure>