Found this workaround in GIT Hub:

2001:331b D-Link Corp. DWA-121 rev B1
   
   -    
Very small and cheap device.

   -    
Supported by the rtl8188eu driver, but isn't detected yet by the driver 
supplied with the ev3dev-stretch beta.
   
Workaround:   
Create a new udev rule   
nano /etc/udev/rules.d/99-dwa121.rules   
And add the following line:   
ACTION=="add", ATTRS{idVendor}=="2001", ATTRS{idProduct}=="331b", 
RUN+="/sbin/modprobe 8188eu" RUN+="/bin/sh -c 'echo 2001 331b > 
/sys/bus/usb/drivers/r8188eu/new_id'"

But when I try to create it I get a message if I do not have permission.
How do I get permission? is there some sort of password I have to use?
    On Sunday, January 20, 2019, 1:42:07 PM CST, Dennis Lee Bieber 
<[email protected]> wrote:  
 
 On Sat, 19 Jan 2019 16:43:10 +0000 (UTC), david rediger
<[email protected]> declaimed the following:

> ~$ sudo chmod ugo+w /etc/udev/rules.d/99-com.rules
>No such file or directory
>

    Use the file YOU have available... My example was for the file on my
RPi (I don't have a WiFi capable BeagleBone).



-- 
    Wulfraed                Dennis Lee Bieber        AF6VN
    [email protected]    HTTP://wlfraed.home.netcom.com/ 

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