Plantronics Soft phone/computer USB Training with 2 x HW510 Headsets
VoiceJoy HD253 USB Headset with Quick Disconnect Adapter Compatible with Plantronics QD,Computer Headset with Microphone|Headphone/Headset| - AliExpress
Plantronics Savi 7210 Mono Wireless Headset 213010-01 Savi 7200 series
Plantronics Voyager 8200 UC Wireless Headset, USB-A Black (208769-01)
Plantronics Blackwire C720-M - 700 Series - headset - on-ear - wireless - Bluetooth - USB - for Microsoft Lync | Dell USA
Plantronics Calisto Headset, W/ USB Dongle, Prior Version - from Image Management, LLC