The Realtek RTL8188CU Wireless LAN 802.11n USB 2.0 Network Adapter
sudo apt update
sudo apt install firmware-realtek
sudo modprobe rtl8xxxu
Maximum Link Rate: Up to 150 Mbps (theoretical), with real-world speeds typically ranging between 40–90 Mbps depending on environment and drivers. Interface: USB 2.0 (compatible with USB 3.0 ports). Security Support: 64/128-bit WEP, WPA, and WPA2 encryption. Compatibility & Drivers Mini 150M Wifi Wireless USB Adapter IEEE 802.11n ... - eBay The Realtek RTL8188CU Wireless LAN 802
For Raspberry Pi OS: The verified driver is pre-installed. However, many Pi users prefer the 8188eu driver from GitHub (by lwfinger) for better monitor mode and injection support. Maximum Link Rate : Up to 150 Mbps