Operation1. Adjustable headband for added comfort2. Adjustable t-bar3. Noise cancelling microphone4. In-line receive volume control: Adjust the digitalreceive volume control up or down5. In-line microphone mute button: Push whilerecording or speaking and the other party will nolonger hear your voice6. Hook On/Off with LED indicator7. Skype for Business/Microsoft Lync compatible USBCable8. Adjustable microphone boomAdjusting the HeadbandPlace the headset receiver to your ear and set the T-barabove your other ear. Adjust the clickstop headband untilcomfortable.The ADD-20USB Headset may be worn on either ear. To switchsides, simply rotate the microphone boom to the other side.www.addcom.com MAN_ADD20USB_1016ADD-20USB Lync Compatible HeadsetThank you for choosing the ADD-20USB Skype for Business/Microsoft Lync Compatible Monaural Headset.This user manual will help you in setting up, using andmaintaining your new headset and adapter cord.Features1. USB plug & play chip2. Complete Digital sound card3. Clear live voice transmission with VoIP4. Digital in-line receive volume control5. In-line microphone (Tx) MUTE with LED indicator6. Hook On/Off with LED indicator7. ON/OFF Control button with VoIP software (MS-Lync)InstallationConnect the headset’s USB adapter to your computer’s USBport for plug & play process. Installation is complete.ADD-20USB Headset User Manual12748563