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Amazon.com: Headset QD(Quick Disconnect) Connector to USB Adapter Cable with Volume Adjuster, Mute for Speaker and Microphone Separately Compatible with Any Plantronics and VoiceJoy Headset QD Plug: Office Products
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Plantronics USB TO HEADSET ADAPTER ( DA60 ) (Discontinued by Manufacturer) Plantronics http://www.amazon.com/dp/B000… | Plantronics, Voip, Digital signal processing
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Blackwire 7225 - Corded, boomless stereo headset with active noise canceling | Poly, formerly Plantronics & Polycom
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