Mirror camera

Just noticed I have a camera under the passenger mirror.

I have a memory of this being discussed on the forum.....but can't find the thread.

I'm assuming it's a view of the passenger kerb rather than 360 degree cam as the driver's side mirror has a puddle light rather than a cam.

Anyone point me at which plug behind the dash is that mirror camera, I do have a yellow RCA behind there doing nothing, but I think that was the old front aftermarket camera that has been removed, it dosent look OEM.

Anyone know if the android head unit will accept the second camera input along with the reverse cam currently connected? I'd guess it would display both video feeds on the basis that the mirror cam is automatically powered up when reversing?