ASUSTeK Computer Inc. 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 device. The Windows version of this driver was developed by ASUSTeK Computer Inc.. The hardware id of this driver is USB/VID_0BDA&PID_C820&MI_02; this string has to match your hardware.

1. How to manually install ASUSTeK Computer Inc. Realtek 8821CU Wireless LAN 802.11ac USB NIC driver

1. You can download from the link below the driver installer file for the ASUSTeK Computer Inc. Realtek 8821CU Wireless LAN 802.11ac USB NIC driver. The archive contains version 1030.40.0128.2019 dated 2021-04-08 of the driver.
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3. Run the driver installer file from a user account with the highest privileges (rights). If your UAC (User Access Control) is enabled please accept of the driver and run the setup with administrative rights.
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5. Follow the driver setup wizard, which will guide you; it should be pretty easy to follow. The driver setup wizard will scan your PC and will install the right driver.
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7. When the operation finishes restart your computer in order to use the updated driver. As you can see it was quite smple to install a Windows driver!
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This driver is digitally signed by ASUSTeK Computer Inc..
File size of the driver: 3623943 bytes (3.46 MB)
This driver received an average rating of 4.8 stars out of 97715 votes.
This driver will work for the following versions of Windows:

• This driver works on Windows 7 32 bits
• This driver works on Windows 8 32 bits
• This driver works on Windows 8.1 32 bits
• This driver works on Windows 10 32 bits
• This driver works on Windows 11 32 bits

2. Using DriverMax to install ASUSTeK Computer Inc. Realtek 8821CU Wireless LAN 802.11ac USB NIC driver

The advantage of using DriverMax is that it will setup the driver for you in just a few seconds and it will keep each driver up to date. How easy can you install a driver with DriverMax? Let's follow a few steps!

1. Start DriverMax and press on the yellow button named ~SCAN FOR DRIVER UPDATES NOW~. Wait for DriverMax to scan and analyze each driver on your PC.
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3. Take a look at the list of available driver updates. Search the list until you locate the ASUSTeK Computer Inc. Realtek 8821CU Wireless LAN 802.11ac USB NIC driver. Click on Update.
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5. Finished installing the driver!
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