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P420
TM
USB Speakerphone
User Guide
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Welcome
Congratulations on purchasing your new Plantronics product. This guide contains instructions for setting up and using your Plantronics
P420 USB speakerphone.
The P420 is a high quality USB speakerphone that is optimised for use with PC-based unified communications solutions applications. By
default, the P420 utilises its internal microphone and loudspeaker providing high quality communication for all your VoIP applications.
Please refer to the safety instructions in the Quick Start Guide for important product safety information prior to installation or use of
the product.
Plantronics P420 USB Speakerphone
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Contents
1 Package contents and features ...................................4
1.1 P420 USB speakerphone ........................................ 4
1.2 P420 USB speakerphone features .......................... 4
2 Set-up ..........................................................................5
2.1 Connecting USB speakerphone to PC .................... 5
2.2 External speakers/headphones connection ............ 5
3 Using your P420 USB speakerphone ..........................6
Volume up, volume down, mute .................................... 6
Plantronics P420 USB Speakerphone
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1 Package contents and features
1.1 P420 USB speakerphone
Speakerphone
USB cable
(mini B to A)
1.2 P420 USB features
3.5 mm stereo jack
(for external speakers
or headphones)
USB port
Volume down
Mute key
Volume up
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2 Setup
2.1 Connecting USB speakerphone to PC
NOTE When the P420 is installed, it becomes the default audio
device in your computer. You can set preferences manually in
the Windows® operating system through the Sounds and Audio
Devices option in the Control Panel.
1 Connect the USB cable to the USB port on the back of
the speakerphone.
2 Connect the other end of the USB cable to the USB port
on your computer. A blue light will illuminate through the
buttons on the top of the unit indicating the speakerphone is
powered on and operating.
2.2 External speakers/headphones
Connection
The P420 is equipped with a 3.5 mm stereo headphones/
external speaker connector. Connecting your computer’s
loudspeakers (or headphones) to the P420 will disable the P420
speakerphone’s internal speaker. Your computer’s audio (music,
VoIP communication or any other) will be passed through to
the external speakers, maintaining the same sound quality your
computer can deliver. While the internal speaker is disabled
when using this connection, the P420 speakerphone’s internal
microphone is still functional.
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3 Using your P420 USB speakerphone
Volume up, volume down and mute
1 Press the down arrow (left button) to decrease the
speaker volume.
2 Press the up arrow (right button) to increase the speaker
volume.
NOTE A prolonged press of the volume buttons will increase or
decrease the volume several levels until you stop pressing the
button. The P420 will beep when a volume up button or volume
down button is pressed and a series of beeps when a prolonged
press is performed. Each beep signals one level of volume
increase or decrease.
3 Press the microphone icon (middle button) to mute
the microphone. A blue light will flash indicating that the
microphone is muted.
4 Press this button again to unmute. The blue light will
become solid indicating the microphone is unmuted.
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Plantronics, Inc.
345 Encinal Street
Santa Cruz, CA 95060
United States
www.plantronics.com
For product support, contact us at www.plantronics.com/support.
© 2009 Plantronics, Inc. All rights reserved. Plantronics, the logo design, P420 and Sound Innovation are trademarks or
registered trademarks of Plantronics, Inc.
83388-01 (12.09)
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