Edimax AC1200 USB 3.0 Adapter Wireless Dual Band.

Edimax AC1200 Dual-Band MU-MIMO USB 3.0 Adapter Wireless Dual Band.
EW-7822UTC
    AC1200 Ultra-Speed Selectable Dual-Band: Max speed up to 300Mbps (2.4GHz) and 867Mbps (5GHz) with 802.11ac Wi-Fi standard and backward compatible with 802.11a/b/g/n standards.

    Easy 11ac Upgrade: Upgrade your single-band 2.4GHz Wi-Fi to 11ac dual-band Wi-Fi for better coverage and faster Wi-Fi speed with zero configuration.

    The Latest USB 3.0: Up to 10 times faster than USB 2.0 with data transfer rates.

    11ac MU-MIMO: The latest 11ac technology runs four streams and serve multiple devices simultaneously.
    Beamforming: With beamforming directional signals support, Wi-Fi performance is dramatically improved with better reliability, range and coverage and less wasted signals.
    Small, Stylish Design: World’s smallest AC1200 Wi-Fi Adapter with MU-MIMO Technology.

    One-Click Wireless Connections: Features the hardware and software WPS (Wi-Fi Protected Setup) button for easy wireless connections.    

     Windows 7/8/8.1 or above
    ​Mac OS 10.7 or above

Standards​     
    2.4GHz: IEEE 802.11b, 802.11g, 802.11n
    5GHz: IEEE 802.11ac, 802.11a, 802.11n
Frequency     
    2.4000 - 2.4835GHz*
    5.150 - 5.825GHz*
    FCC: Band 1:  5.150~5.250(GHz) ; Band 4:  5.745~5.850(GHz)
    CE:   Band 1: 5.150~5.250(GHz)