Which 8-pin connector on the back of an Intellitron DM-5300 is used

Which 8-pin connector on the back of the Intellitron DM-5300 desk mic is used with the adapter cable to connect to an Icom IC-7300mk2 microphone input? There is an ‘A’ and a ‘B’ connector. I want to use the correct connector to avoid causing a problem.

@Steven_Westby please send an email to sales@gigaparts.com Please send a picture of the back of the unit you received. Advise if there was/wasn’t a “plug” in one of the holes on the back. If there was a “plug” you would not use that spot, you would use the other one.