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Amazon.com: daily headset USB Adapter Cable Compatible Plantronics QD (Quick Disconnect) to USB Plug, Speaker Volume & Mic Mute Control Connects Headset to PC, Laptop, Soft Phone and More : Electronics
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Amazon.com: daily headset QD USB Phone Headset Adapter Cable Compatible with Plantronics Quick Connect, Spk Volume Up Down Mic Mute Unmute in-line Controls : Electronics
Plantronics Calisto Headset, W/ USB Dongle, Prior Version - from Image Management, LLC