FOR Plantronics 38099-01, Generic bulk bagged, not OEM product Coiled cord connects any Plantronics H-series headsets H141, H141N, H251, H251N, H51, H51N, H61, H61N, H261, HW261, HW261N, H261N, H51N, HW251, HW251N, H41, H41N, H81, H81N, H101, H101N, HW510, HW520, HW530, HW540, HW710, HW720, H91, H91N, H361,H361N, H351N, H171, H171N, HW301N to IP phone headset ports by Auerswald, Funwerk, Yealink, Snom and Grandstream models For: Yealink: SIP-T19P,SIP-T20P,SIP-T21P,SIP T22P,SIP T26P,SIP T28P, SIP T29G, SIP T32G, SIP-T38G, SIP-T41P, SIP-T42G, SIP-T46G, SIP-T48G and SNOM 320,SNOM 360,SNOM 370,SNOM 710,SNOM 720,SNOM 760,SNOM 820,SNOM 821,SNOM 87 Please call for headset cord compatibility prior to purchase, we'd love to help! NOTE: These units are not Plantronics original, they are generic equivalents.