Download and install Realtek Semiconductor Corp. Realtek 8821BU Wireless LAN 802.11ac USB NIC driver

Realtek 8821BU Wireless LAN 802.11ac USB NIC is a Network Adapters hardware device. This driver was developed by Realtek Semiconductor Corp.. USB/VID_0BDA&PID_B821 is the matching hardware id of this device.

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

1. Download the driver setup file for Realtek Semiconductor Corp. Realtek 8821BU Wireless LAN 802.11ac USB NIC driver from the link below. This is the download link for the driver version 1027.4.0630.2015 dated 2015-10-08.
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3. Start the driver installation file from a Windows account with the highest privileges (rights). If your UAC (User Access Control) is started 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 analyze your PC for compatible devices and will install the driver.
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7. Shutdown and restart your PC and enjoy the new driver, as you can see it was quite smple.
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This driver is digitally signed by the manufacturer.
Driver file size: 1552974 bytes (1.48 MB)
This driver was rated with an average of 4.9 stars by 63044 users.
This driver was released for the following versions of Windows:

• 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 Realtek Semiconductor Corp. Realtek 8821BU 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. Open 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 detected driver updates. Search the list until you find the Realtek Semiconductor Corp. Realtek 8821BU Wireless LAN 802.11ac USB NIC driver. Click the Update button.
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5. That's it, you installed your first driver!
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