Yealink DD10K DECT USB Adaptor
DD10K DECT USB dongle, for T41S / T42S, to enable pairing with a W60B DECT IP base, and for T53 / T53W / T54W / T57W / T58A / VP59 to work as a base station for pairing with up to 4 compatible W52H / W56H / W53H handsets. Note: T41S / T42S require firmware version 66.82.0.35 or later, T58A requires firmware version V83 or later.