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When the internal network card doesn’t support the desired standard, an alternative to an external adapter is to replace the internal card with a newer card. As of this writing, the current wireless standard is 802.11n, which is replacing the older 802.11g standard. Older cards that only support the older protocol will not work with routers that only support the newer, faster standard. This is especially true when wireless standards are changing from one protocol to a newer, faster protocol. Most laptop computers come with a built-in WiFi® card, or wireless network card, but there are times when the supplied card won’t do. The next time you boot, the device will automatically log you into the network of choice. Click the name of the network you wish to join, and supply credentials as needed. Upon plugging it in, it will scan the airwaves for local broadcasts, working with system software to display the names of local networks for the user.

A wireless network adapter looks similar to a memory stick or thumb drive: a small USB dongle with an LED light that indicates power and operability.