Phonak MLxS BAHA version

The pins on the MLxS BAHA unit are all the same size how do I establish which way round it is supposed to be connected to the BAHA processor and does it matter?

The MLxS unit must be correctly aligned to the BAHA processor for it to work.

Looking at the MLxS with the pins towards you there is a light grey circle round the base of one of the pins. This pin should be aligned with the hole on the BAHA processor with the red dot next to it.