The Realtek 8188GU is a USB wireless network interface card that supports the 802.11n wireless standard. It is designed to provide a fast and reliable wireless connection, allowing users to access the internet, share files, and stream media wirelessly. The device is small, compact, and easy to use, making it a popular choice for both home and business users.
Realtek never officially supported macOS beyond High Sierra for the 8188GU. The last compatible chipset for native macOS drivers was the 8188EU. For the 8188GU on modern macOS (Catalina, Big Sur, Monterey, Ventura, Sonoma):
The Realtek 8188GU Wireless LAN 802.11n USB NIC driver represents the workhorse of budget wireless connectivity. While it lacks the blazing speeds of modern Wi-Fi 6 standards, it provides essential connectivity for millions of devices.
Download the setup file and run the .exe file.
Extract the downloaded ZIP file to a folder on your desktop. Right-click the and select Device Manager . realtek 8188gu wireless lan 802.11n usb nic driver
Click and select the unzipped driver folder from Step 1.
Linux support for the Realtek 8188GU comes primarily from community-maintained drivers, as Realtek has not provided widespread mainline kernel support for this chipset.
However, the chipset has two unique characteristics that cause most support headaches.
Often features a built-in smart antenna or a mini portable design for portability. 2. Driver Architecture and Installation The Realtek 8188GU is a USB wireless network
As of early 2026, the latest official Windows drivers include:
The Windows driver (often netrtwlanu.inf ) supports versions from .
: These adapters are among the cheapest Wi-Fi solutions available, often costing less than $10 USD.
echo "rtl8xxxu" | sudo tee -a /etc/modules Realtek never officially supported macOS beyond High Sierra
Even with the correct driver, the 8188GU is a budget 802.11n adapter. Here is how to squeeze every megabit out of it:
That said, if you already own a Realtek 8188GU adapter, the information in this guide should help you get it working on your preferred operating system.
sudo nano /etc/modprobe.d/blacklist.conf