Plantronics CS540 - Manual (Page 9)

9
Position your headset
When you wear the headset, the microphone should rest as close to your cheek as possible
without touching. The microphone can be adjusted inward by the pivoting earpiece to optimise
the position of the headset.
1 Slide the headset over and behind your ear and fit the ear tip into your ear.
2 Holding the base of the headset, push it in and back towards your ear to allow the pivoting
earpiece to bring the microphone close to your mouth. As the base of the headset moves
backwards, you will feel soft clicks until the microphone rests close to your cheek.