To link to a Wi-Fi network a computer must have a wireless network interface controller or a wireless adapter enabled. The adapter helps the computer to sense Wi-Fi signals from a router, enabling the device to transmit and receive data over the Internet. In most cases you can patch yourself a problem-stricken Wi-Fi adapter without opening the case.

You can connect your desktop PC to your wireless network with a few choices available: you can use a USB wifi adapter, add a specific PCIe wifi card, or upgrade to a new motherboard with built-in Wifi.
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