Yealink PA20. Form factor: Dongle, Product color: Black. Networking standards: IEEE 802.11a, IEEE 802.11ac, IEEE 802.11az, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, Security algorithms: WPA-PSK, WPA2-PSK. Power consumption (typical): 2.2 W. Windows operating systems supported: Windows 10, Windows 11, Windows 7, Windows 8, Mac operating systems supported: Mac OS X 10.10 Yosemite, Mac OS X 10.11 El Capitan, Mac OS X 10.12 Sierra, Mac OS X 10.13 High.... Width: 8.66" (220 mm), Depth: 1.5" (38 mm), Height: 0.63" (16 mm)