Realtek RTL8188CU Wireless LAN 802.11n USB 2.0 Network Adapter Introduction
The RTL8188CU is a popular solution for low-power, high-performance wireless networking. It enables data rates up to 150 Mbps over the 2.4 GHz band and is backward compatible with 802.11b/g. Its USB 2.0 interface allows easy integration without internal PCIe slots, making it ideal for dongles and embedded modules. Realtek RTL8188CU Wireless LAN 802
Note: On Arch Linux, you must manually copy the firmware from the linux-firmware package. it almost certainly had this inside.
This chipset powers millions of generic USB adapters. If you bought a cheap "Mini Wireless N USB Adapter" from Amazon or eBay ten years ago, it almost certainly had this inside. Realtek RTL8188CU Wireless LAN 802