Ref - 409516Brand Name - PlantronicsCategory - TechnologyDesigned For:Avaya 2410, 4630, 5410, 6416D+M, 6424D+M ¦ Avaya one-X Deskphone Edition 9620 IP Telephone, 9630 IP Telephone, 9640 IP Telephone, 9650 IP Telephone ¦ Avaya one-X Deskphone Value Edition 1608, 1616 ¦ Plantronics CS 510, 520, 540 ¦ Plantronics Savi W710, W720, W730, W740, W745 ¦ Plantronics Savi Office WO100, WO200, WO300, WO350