The unit was only used for about 3 months. It will add Carplay and Android Auto to your NBT system. Read more here:
https://www.amazon.com/dp/B07YC37KYF?th=1
Installation video:
Good discussion about these units here:
https://f30.bimmerpost.com/forums/sh....php?t=1675929
U.S. buyers only. PayPal only.