A Wi-Fi card (also known as a wireless network interface controller or WNIC) is an internal hardware component that enables a computer to connect to wireless local area networks (WLAN) and the internet without physical Ethernet cables. It serves as a communication bridge, converting digital data from the computer into radio frequency (RF) signals and vice versa.
Core Functions
Wireless Connectivity: Connects desktops or laptops to home, office, or public Wi-Fi networks.
Dual-Band/Tri-Band Support: Operates across different radio frequencies (usually 2.4 GHz, 5 GHz, and 6 GHz) to optimize speed and signal range.
Integrated Bluetooth: Most modern Wi-Fi cards also include a Bluetooth chip on the same board. This allows users to connect wireless accessories like keyboards, mice, and headphones