Uninstall the current driver completely, unplug the adapter, reboot your computer, try a different physical USB port (on the back of the motherboard if using a desktop), and reinstall the WHQL driver from the Microsoft Update Catalog. Verdict: Is the RTL8188CU Still Worth Using?
| Specification | Details | | :--- | :--- | | | Realtek RTL8188CU (or the near-identical RTL8188CUS) | | Wireless Standards | IEEE 802.11b/g/n (2.4 GHz only) | | Maximum Data Rate | Up to 150 Mbps | | Interface | USB 2.0 (backward compatible with USB 1.1) | | Frequency Band | 2.4 GHz (2.400–2.4835 GHz) | | Security | 64/128-bit WEP, WPA, WPA2 (TKIP/AES), WPS | | Operating Modes | Infrastructure (connecting to a router) and Ad-hoc (device-to-device) | | Antenna | Typically an integrated PCB trace antenna (some modules support external) | | Regulatory | FCC, CE certified | Uninstall the current driver completely, unplug the adapter,
The Pi’s USB ports share bandwidth with Ethernet. Force the driver to disable power saving: Force the driver to disable power saving: git
git clone https://github.com/lwfinger/rtl8xxxu.git cd rtl8xxxu sudo dkms install . sudo make install_fw # Install firmware files sudo modprobe rtl8xxxu including Windows 10 and 11
The RTL8188CU still works on modern versions of Windows, including Windows 10 and 11, though you might need to bypass the automatic driver that Windows Update installs.
Understanding the hardware capabilities helps you get the best performance out of your device: : USB 2.0 (backward compatible with USB 1.1) Wireless Standard : IEEE 802.11n (compatible with 802.11b/g) Frequency Band : 2.4 GHz (Single Band) Maximum Data Speed : Up to 150 Mbps Security Protocols : WEP 64/128-bit, WPA, WPA2, WPS
