I n s t a l l a t i o n27Mount the microphone so that it is not exposed to air streams from thevents. Do not place the microphone cable in the heating, ventilation, orair-conditioning system. Use the supplied double-sided adhesive tape tofix the microphone to reduce the amount of background noise of the carthat can interfere with your calls.Insert the microphone plug into the microphone connector on thehands-free unit, and turn the plug clockwise to lock it firmly. Use of anyother microphone than the supplied microphone may impact the audioquality.Charging cable CA-134The car kit comes with the charging cable CA-134 that has a 2.0-mm(0.08 inch) charging plug for compatible Nokia devices. The salespackage may also include a charging cable that has a micro-USBcharging plug for compatible Nokia devices.To connect the charging cable to your mobile phone, carefully insert oneend of the cable to the respective connector on the hands-free unit HF-22 and the other end to the charger connector on your phone.ISO cables CA-135 and CA-152If the ISO cable CA-135 or CA-152 is supplied with the car kit, you canuse it to easily connect the car kit to a car radio that has ISO connectors.See “Integration with a car radio system,” p. 18.