Image 1 of 1 Yealink DD10K DECT USB Dongle for the SIP-T41S and T42S, Yealink T5 Range $35.00 • Supports Yealink SIP- T41S/T42S with FW 66.82.0.35 only• Reliable Connection• Ease-of-use• Plug and Play• High Transmission Rate Quantity: Add To Cart Added! • Supports Yealink SIP- T41S/T42S with FW 66.82.0.35 only• Reliable Connection• Ease-of-use• Plug and Play• High Transmission Rate