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
USB Adapter Compatible with any Plantronics or TruVoice Wired Headset with a QD and Includes Volume Control and Mute Functionality (Connects headset to PC, Laptop and Softphones) : Amazon.ca: Electronics
DA Series - Smarter digital adapters for Poly QD headsets | Poly, formerly Plantronics & Polycom
Plantronics Audio DSP Adapter 01 Headset USB to Dual 3.5mm Jack W/ Headphones | eBay
Amazon.com: VoiceJoy Call Center Headset Quick Disconnect QD Cable to USB Plug Adapter for Plantronics QD Connector to Any Computer Laptop : Electronics
Plantronics D100 DECT USB wireless headset adapter standard UC
Plantronics Voyager Focus UC Bluetooth Headset with USB