Latest BPI-R2 rev 1.2 hardware SD/EMMC switch purpose?

Can anyone tell me what the purpose of that switch that sits by the SD card, where there used to be the battery connector on the old boards?

I tried switching between SD and EMMC but I don’t see any noticeable difference between the two switch positions.


For the sake of posterity, after more experimenting with that switch, so others who might have this question can get the answer here…

When you have a valid configuration on both SD card and eMMC this switch is used to toggle where from the system boots.

If you only have one or the other this switch doesn’t seem to do anything.

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