Adapter Link: Realtek Rtl8188cu Wireless Lan 80211n Usb 20 Network
A common point of confusion with the RTL8188CU is that users cannot find their network during setup. This adapter operates strictly on the frequency. If your router is set to "5 GHz only" or "802.11ac/ax only," this adapter will not detect the signal. You must ensure your router has a mixed or 2.4 GHz mode enabled.
Right-click the missing or yellow-triangle adapter and select . Choose Browse my computer for drivers . Select the extracted folder and click Next to install. Linux Installation (Ubuntu, Debian, Raspberry Pi OS)