[Albert J]

Maybe a workable solution could be to have a Chinese clone kit, to have the cables and MOST Connector, but also purchase an original BMW ICOM NEXT from your closest dealer and use that all the time. Use the possibly poor quality clones only when the original goes down, or it has to be repaired.

Part # for original 81312360883 Picture also included below. BMW price is US $720.00. Well worth the investment.
One DME U lock up is over $1,000.00 [one thousand]. The balance is obvious.....

A real good idea is to complete a self installed heat-sink and fan, like some of the contributions mentioned before.

Other part #s for the original kit are here:
81312360884
81312360885
81382201932
81382339699