Plantronics RD-1 Headset Hook Switch Control Adapter, 78887-01 for Toshiba and Shortel phones
Amazon.com: Poly - DA85M USB-A/USB-C Digital Adapter (Plantronics) - Works with Poly Call Center Quick Disconnect (QD) Headsets - Acoustic Hearing Protection - Hold & Call Answer Buttons - Optimized for Teams :
Plantronics Blackwire 3220 - Wired Dual-ear (stereo) Headset With Boom Mic - Usb-a To Connect To Your Pc And / Or Mac : Target
Poly Voyager Focus UC Bluetooth Headset with USB 202652-101 B&H
Plantronics Audio DSP USB Adapter to Dual 3.5mm Female for analog Headset to PC | eBay