A WiFi dongle is a small device that plugs into a computer or laptop to give it wireless internet access. It usually connects through a USB port and allows the device to connect to a Wi‑Fi network if it does not have built‑in Wi‑Fi.

Common uses: Adding Wi‑Fi to desktop computers, replacing a faulty internal Wi‑Fi card, improving wireless connectivity

Related terms: USB Adapter, Wireless Adapter, Wireless Router, Wi‑Fi Network, Ethernet Cable, Signal Strength, Dual Band, Network Card, Hotspot, Wireless Access Point