AAKNGADREAH Side Connector, KAA0214 - KNG to Hirose for RELM BK Radio KNG P Series
Side Connector Option must be used in conjunction with the KAA0228 (Behind the Head Noise Canceling Headset with Boom Mic) for the KNG-P Series Portable radios. NOTE: the KAA0214 is an exclusive hirose adapter for the KAA0228 headset only and cannot be used with any other KNG-P accessories.
The KAA0214 is KNG P Side port adapter does not have a 3.5mm jack port. The Adapter has a 6 pin Hirose plug which is most commonly used on the Motorola Speaker Microphones. Currently if you want to use an earpiece with a 3.5mm Jack you would have to use a speaker mic on the radio and the earpiece with the speaker mic.
Customer Support at BendixKingRadios.com answered on August 8, 2017