Yealink DD10K DECT USB Dongle enables T41S or T42S phones to work concurrently with the Yealink DECT system. It also enables T53, T53W, T54W, T57W or T58A phones to work as a base station, which can be registered with up to four (4) compatible Yealink W52H, W56H or W53H handsets. Compatible with:
• T53, T53W, T54W and T57W
• T41S and T42S with FW or later
• T58A with FW V83 or late