> 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="https://2814148991-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FlN2lfY7yE0hWlcn6W1BS%2Fuploads%2Fhq8fZXHMJvVBNebGgO3F%2Fimage.png?alt=media&amp;token=9b16a393-7cb4-4cc1-9632-76abbd38ccf4" alt=""><figcaption></figcaption></figure>