These adapters typically use a large external antenna to communicate with the router to draw power from the desktop's power source. For example, desktop users may be well suited for PCI adapters that are specifically designed to fit the expansion slots available inside the desktop. There are many types of wireless network adapters that can be widely used. A wireless network adapter within range will pick up the signal and establish a wireless connection.

Wi-Fi 'hotspots' or locations typically broadcast radio waves through areas ranging from 75 to 150 feet. The wireless network adapter picks up the signals broadcast by the wireless network. However, newer 802.11n versions use multi-stream technology to double the speed to 108 Mbps. Generally speaking, the later the letter falls in the letter, the higher the version of the protocol: for example, 802.11g, which supports speeds up to 54 megabits per second (54Mbps).

The first version of the protocol, 'A', is referred to as 802.11a. This version is indicated by a lowercase letter at the end of the standard name. Wireless network adapters follow the IEEE 802.11 standard, although different versions of the standard allow faster speeds. You can also use a USB port on the computer or an internal adapter already contained within the computer to connect the wireless network adapter. The function of it is to expand computer functionality by connecting to the computer via expansion card devices, or cards, such as memory cards or PC cards.

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