Realtek 8188GU Wireless LAN 802.11n USB NIC is a compact network interface controller (NIC) designed to add Wi-Fi connectivity to computers via a USB port. It is typically found in small USB "dongles" and uses the 802.11n standard to provide wireless speeds up to on the 2.4GHz frequency band. Key Technical Specifications

Realtek 8188GU Wireless LAN 802.11n USB NIC driver

The is the software required for your computer to communicate with Wi-Fi adapters using the Realtek 8188GU chipset. This hardware typically operates on the 2.4GHz band with speeds up to 150Mbps. Where to Find the Driver

• Driver signature enforcement on Windows 10/11 (use test mode for unsigned drivers)
• Intermittent disconnections on power-saving USB ports – disable USB selective suspend in Power Options.
• Limited 150 Mbps throughput due to USB 2.0 bottleneck.

Interface

: Uses USB 2.0 , which is sufficient for its throughput but can be a bottleneck compared to newer USB 3.0 adapters.

• You use Linux and are tired of recompiling drivers after every kernel update.
• You need stable Zoom/Teams calls (the 8188GU has known latency spikes).
• You have a Wi-Fi 6 router.