How do you know if your modem is wireless?

Firstly, most modern laptops already have an internal wireless card installed. For other similar devices, which are portable and battery powered, they may or may not include a wireless card, however. In that case, you would have to check the specifications for that device and check if a wireless card can be possibly installed. Most desktops do not have their own wireless card installed by default, but you may purchase either an internal or external wireless card for the desktop.

Most computers have ports that allow human interface devices, such as keyboards and mouses to be connected. Laptops, for example, may already have a touchpad and a keyboard built in. If there are no human interface devices, you may get a wireless keyboard and/or mouse, which use radio frequencies or Bluetooth wireless.

Lastly, if you want online access, you will need a Wi-Fi or WiMAX card (http://en.wikipedia.org/wiki/Wi-Fi for more information) to connect to a wireless network with an internet connection.