For Yealink T42U, T46U, T48U Phones. ✔️ Yealink T42U, T46U, T48U Dual Headset. ✅ RJ9 connectivity to Yealink IP phones, including T19(P) E2/T21(P) E2 / T23P / T23G / T27G / T29G / T30 / T30P / T31 / T31P / T31G / T33P / T33G / T40P / T40G / T41S / T42S / T46S / T48S / T42U / T43U / T46U / T48U / T53 / T53W / T54W / T57W / T58A / VP59 / T41S SFB / T42S SFB / T46S SFB / T48S SFB / T55A SFB / T56A SFB / T58A SFB / MP56.
eBay