Wireless Internet data is invisible and the hardware that supports Wireless Fidelity (Wi-Fi) connectivity on PCs is just as elusive. Some Wi-Fi adapters use prominently displayed antennas so the computer has a stronger Internet signal for transmitting network data. However, advancing technology is allowing manufacturers to use low-profile, miniature adapter "cards" that don't resemble a "receiver." In any case, if you have Windows, you can use a utility in the operating system to tell if the PC is capable of supporting Wi-Fi.
Open the "Start" menu and type "View Network Connections" in the search box at the bottom of the menu. Press "Enter" to open the "Network Connections" folder.
Click the "Name" column heading to alphabetize the hardware adapters that Windows is currently detecting in the PC.
Look for the "Wireless Network Connection" icon, which identifies that a Wi-Fi adapter is available on the computer.