QUICK START
POLY SYNC 40 SERIESPOLY SYNC 40 SERIES
© 2021 Plantronics, Inc. All rights reserved. Poly, the  
propeller design, and the Poly logo are trademarks of  
Plantronics, Inc. Bluetooth is a registered trademark of Bluetooth SIG, Inc. 
and any use by Plantronics, Inc. is under license. All other trademarks are 
the property of their respective owners. Manufactured by Plantronics, Inc.
215633-04 Rev C 04.21   Model ID: SY40/SY40-M (may be followed by /BT600)
LINK SPEAKERPHONES 
“Connection successful”
:02 :02
“Connecting” “Connecting”
:02
Siri 
Google Assistant
/
poly.com/support
To wirelessly connect two Sync 40, press Link   button on both speakerphones 
for 2 seconds. You hear “connection successful” when linked. Pair one 
speakerphone to your idle mobile device to make calls or play media. 
Note: Ensure your speakerphone USB cable is not connected to a computer. 
Play/pause  
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