> For the complete documentation index, see [llms.txt](https://support.senterasensors.com/home/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.senterasensors.com/home/6x-series-sensors-user-guide/integration-information/electrical-connectors.md).

# Electrical Connectors

## Information

The following tables list pin descriptions of the sensor connectors. All 3.3V UART and 3.3V I2C interfaces are **not** 5V tolerant. For additional detail on sensor interfaces contact Sentera Support.

The sensor can auto-negotiate the Ethernet speed. Therefore, only four pins are required for a slower 10Base-T or 100Base-T speeds. All eight pins are required for communication at a 1000Base-T speed. Depending on your host platform, your power connection method may vary.

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## J1 - Power In

<table><thead><tr><th>Item</th><th width="138" align="center">Manufacturer</th><th width="88" align="center">Series</th><th align="center">Part Number</th></tr></thead><tbody><tr><td>Onboard Connector</td><td align="center">JST</td><td align="center">GH</td><td align="center">BM04B-GHS-TBT</td></tr><tr><td>Mating Connector</td><td align="center">JST</td><td align="center">GH</td><td align="center">GHR-04V-S</td></tr></tbody></table>

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## J2 - Expansion Port

<table><thead><tr><th>Item</th><th width="135" align="center">Manufacturer</th><th width="89" align="center">Series</th><th align="center">Part Number</th></tr></thead><tbody><tr><td>Onboard Connector</td><td align="center">JST</td><td align="center">GH</td><td align="center">BM12B-GHS-TBT</td></tr><tr><td>Mating Connector</td><td align="center">JST</td><td align="center">GH</td><td align="center">GHR-12V-S</td></tr></tbody></table>

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## J3 - Power I/O

<table><thead><tr><th width="263">Item</th><th width="139" align="center">Manufacturer</th><th width="92" align="center">Series</th><th align="center">Part Number</th></tr></thead><tbody><tr><td>Onboard Connector</td><td align="center">JST</td><td align="center">GH</td><td align="center">SM06B-GHS-TB</td></tr><tr><td>Mating Connector</td><td align="center">JST</td><td align="center">GH</td><td align="center">GHR-06V-S</td></tr></tbody></table>

***

## J4 - Ethernet

<table><thead><tr><th>Item</th><th width="142" align="center">Manufacturer</th><th width="83" align="center">Series</th><th align="center">Part Number</th></tr></thead><tbody><tr><td>Onboard Connector</td><td align="center">JST</td><td align="center">GH</td><td align="center">SM08B-GHS-TB</td></tr><tr><td>Mating Connector</td><td align="center">JST</td><td align="center">GH</td><td align="center">GHR-08V-S</td></tr></tbody></table>

***

## J5 - USB-C

| Item                    | Value |
| ----------------------- | ----- |
| Power Distribution (PD) | No    |
| USB 3.1                 | Yes   |

***

## J6 - Micro SD Card

| Item             | Value |
| ---------------- | ----- |
| exFAT Support    | No    |
| UHS-I            | Yes   |
| UHS-II and above | No    |
| SD Express       | No    |