Adding External Compass to Pixhawk - Correct Orientation?

Hi everyone, Have two pixhawks. Am putting on an external compass on one. When I did the same process on APM 2.5 the external mag was to be aligned with the onboard mag by matching the dots on the chips for orientation. What is the correct orientation for the Pixhawk? If I open the case to look does that void the warranty? Thanks rkenosha

There is a white arrow above the RGB led, that’s the Pixhawk front.

On initial setup, mandatory hardware, compass, select the Pixhawk/PX4.