Realtek Semiconductor Corp. Realtek 8821CU Wireless LAN 802.11ac USB NIC - two ways of downloading and installing the driver

Realtek 8821CU Wireless LAN 802.11ac USB NIC is a Network Adapters hardware device. This Windows driver was developed by Realtek Semiconductor Corp.. USB/VID_0BDA&PID_B820&MI_02 is the matching hardware id of this device.

1. How to manually install Realtek Semiconductor Corp. Realtek 8821CU Wireless LAN 802.11ac USB NIC driver

1. Download the setup file for Realtek Semiconductor Corp. Realtek 8821CU Wireless LAN 802.11ac USB NIC driver from the location below. This is the download link for the driver version 1030.13.704.2016 dated 2016-12-19.
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3. Start the driver installation file from a Windows account with administrative rights. If your User Access Control (UAC) is running then you will have to accept of the driver and run the setup with administrative rights.
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5. Go through the driver setup wizard, which should be pretty straightforward. The driver setup wizard will scan your PC for compatible devices and will install the driver.
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7. Restart your PC and enjoy the fresh driver, as you can see it was quite smple.
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Realtek Semiconductor Corp. applied a digital signature to this driver.
Size of this driver: 2274271 bytes (2.17 MB)
Driver rating 5 stars out of 68832 votes.
This driver will work for the following versions of Windows:

• This driver works on Windows 2000 64 bits
• This driver works on Windows Server 2003 64 bits
• This driver works on Windows XP 64 bits
• This driver works on Windows Vista 64 bits
• This driver works on Windows 7 64 bits
• This driver works on Windows 8 64 bits
• This driver works on Windows 8.1 64 bits
• This driver works on Windows 10 64 bits
• This driver works on Windows 11 64 bits

2. How to use DriverMax to install Realtek Semiconductor Corp. Realtek 8821CU Wireless LAN 802.11ac USB NIC driver

The advantage of using DriverMax is that it will setup the driver for you in the easiest possible way and it will keep each driver up to date. How can you install a driver using DriverMax? Let's take a look!

1. Start DriverMax and press on the yellow button that says ~SCAN FOR DRIVER UPDATES NOW~. Wait for DriverMax to analyze each driver on your computer.
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3. Take a look at the list of detected driver updates. Search the list until you locate the Realtek Semiconductor Corp. Realtek 8821CU Wireless LAN 802.11ac USB NIC driver. Click on Update.
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5. Enjoy using the updated driver! :)
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