Wi-Fi USB Dongle WF40 is a low-power, small form factor device that can be implemented within offices for seamlessly connecting their IP phones to available wireless networks. This dynamic plug-and-play style USB device is an ideal office networking solution for companies—particularly, smaller organizations—seeking affordable, convenient and reliable high-speed wireless connectivity. <br /> <br /> "This is a Global Teck exclusive offer." <br /> <br /> <b>Bundle includes:</b> <br /> ✅WF40 USB Wi-Fi Dongle for SIP IP Phones <br /> ✅ Yealink Start Guide <br /> ✅ Global Teck Microfiber Cloth <br /> <br /><b>IMPORTANT:</b> <br /> ✅ For T48G: upgrade to the version of 35.80.0.95 or higher <br /> ✅ For T29G/T46G/T46S/T48S: upgrade to the version 81 or higher <br /> ✅ For T27G: upgrade to the version of 69.81.0.90 or higher