# Getting Started

## Powering up the board

MR-CANHUBK344 should be powered through connector P27, or alternatively through header P28. P27 is a 5-pin JST-GH connector. Pin 1 has been indicated by the yellow triangle in the picture below. A voltage between +5 and +40V should be applied to pins 1-2, while pins 4-5 are GND. Pin 3 is not connected. The polarity of header P28 is also indicated below.

<figure><img src="https://4107432906-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FtwBzyvivLuBKj9SMDwV9%2Fuploads%2FVBvHXJV8uD6lgWmDDbsp%2Fimage.png?alt=media&#x26;token=df3b830e-4a91-4fe4-9ba3-85a40bd03d14" alt=""><figcaption></figcaption></figure>


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