Realtek 8812au / AWUS036AC Dualband USB3 wifi adapter

  • Hi,
    I have the following wifi adapter :
    Alfa Network AWUS036AC Long-Range Dual-Band AC1200 Wireless USB 3.0 Wi-Fi Adapter w/2x 5dBi Removable External Antennas for Extreme Distance Connections - 2.4GHz 300Mbps / 5Ghz 867Mbps - USB Cradle Dock Included - Standard's 802.11a, 802.11b, 802.11g, 802.11N, 802.11ac

    It uses the Realtek 8812au chipset. From what i can find this is supported by freebsd (
    After plugging the dongle into my pfSense box I can see it via dmesg :
    ugen5.2: <Realtek 802.11n NIC> at usbus5
    and usbconfig :
    ugen5.2: <Realtek 802.11n NIC> at usbus5, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (500mA)

    But i cant see it via the pfSense frontend. I am presuming the fact that dmesg and usbconfig are showing the device means it is being recognized by the system.

    Anyone got any pointers on getting it working?

    I know a lot of people say dont use USB networking, but I am hoping to use these on SG1100's as well.
    If there is no way to get this working, can anyone suggest a similar product (and price range) that will work (Dualband, AP and client mode)?



    psSense Machine :
    Version 2.4.4-RELEASE-p3 (amd64)
    built on Wed May 15 18:53:44 EDT 2019
    FreeBSD 11.2-RELEASE-p10
    CPU Type AMD A8-5600K APU with Radeon(tm) HD Graphics
    4 CPUs: 1 package(s) x 4 core(s)
    AES-NI CPU Crypto: Yes (inactive)

  • Netgate Administrator

    It's recognosing the hardware is connected. That driver is for usb2.0 802.11N devices though, I doubt it will work with your device. I don't see the RTL8812 listed.
    It would not support .ac mode even if it was recognised by the driver.


  • Hi stephenw10,
    Thanks for the response.
    Any recommendations on an alternative dongle?

  • Netgate Administrator

    An actual access point will generally work much better and can use current wifi tech etc.

    I have had some success with a TP-Link tl-wn7200nd. It's a Ralink rt2800 based device. It's only 1x1 though so 150Mbps theoretical max. I've not tested anything newer myself.


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