Realtek RTL8811CU Wifi Dongle

Question

How may I get the USB Wifi recognized and operational when I plug it in?

When I use the lsusb command it shows:
Realtek Semiconductor Corp.

For the manufacturer I know the driver is RTL8811CU

On the package I can read:

Dual band USB Adapter;
600 mbps;
2.4 GHz + 5 GHz;
USB 2.0 High-Speed;
IEEE: 802.11 ac;
Supported OS: Windows XP/Vista/7/8/10/Mac/Linux;

My Ubuntu OS is:

Ubuntu 18.04.4 LTS;
Release: 18.04;
Codename: bionic;

My linux kernel version is:

4.15.0-88-generic

Solution

It works with mercusys ac650, but only in 2GHhz. It was a lot of work, so I'm so grateful for the help.

Do you know some way that can work with wifi 5GHz?, but either way I'm so grateful.

For those who have the same device that I have https://www.mercusys.com/en/product/details/mu6h the 3rd option works.

sudo apt install build-essential -y
mkdir -p ~/build
cd ~/build
sudo apt install git
git clone https://github.com/brektrou/rtl8821CU.git
cd rtl8821CU
make
sudo make install

Comments

[Rafael Elias Grigolo]

Thank you very much for answering. But it didn't solve the issue. The point is that my OS isn't recognizing the USB dongle plugged in. Because I think there's no driver for it on the default list. So I asked for help: someone who owns the driver and could provide it to me and guide me through the driver installation.

[Gryu]

Ok. I've edited answer. Could you try it?

[Rafael Elias Grigolo]

Thank you very much for your time and help. It worked with the last par of commands you provided me (your "or" part). I really appreciate your help. Wish you all the very best!

[Gryu]

No problem) Glad it helped. It's not mine solution, but driver author's