Amazon.com: Plantronics - Blackwire 5210 - Wired, Single Ear (Monaural) Headset with Boom Mic - Computer Headset - USB-A, 3.5 mm to connect to your PC, Mac, Tablet and/or Cell Phone : Everything Else
BT700 USB-A / USB-C Adapter - High-fidelity Bluetooth USB Adapter | Poly, formerly Plantronics & Polycom
MDA220 USB - Switch for Poly USB Headsets | Poly, formerly Plantronics & Polycom