Poly DA85 USB to Quick Disconnect Adapter (Both USB-A and USB-C Included!)
Poly - Sync 20+ Bluetooth Speakerphone - Personal Portable Speakerphone - Noise & Echo Reduction - USB-A Bluetooth Adapter - Compatible to connect to your PC/Mac/Cell Phone - Works with Teams, Zoom - Newegg.com
Amazon.com: INNOTALK Wireless Headset Compatible with Poly Polycom VVX300, VVX310, VVX400, VVX410 and Any VVX Model with EHS Remote Answering Cord Bundle(Pioneer) : INNOTALK: Electronics
Amazon.com: OvisLink Polycom SoundPoint Phone Headset | Dual Ear Noise Canceling Call Center Headset Compatible with Polycom SoundPoint IP Phones with 2.5mm Headset Jack | Premium Voice Quality | Durable : Electronics
Echo on your Plantronics or Poly Headset? Here's how to fix it!
Logitech H650e Stereo USB Headset
OvisLink Polycom Phone compatible Call Center headset with Noise Canceling, HD voice and Quick Disconnect function
Plantronics Savi W740 Frequently Ask Questions and Troubleshooting - HeadsetPlus.com Plantronics, Jabra Headset Blog