Take the power of the Internet wherever you go, even if your computer does not have an in-built wireless card. A dongle plugs into a USB slot and, depending on the model and your subscription fees, gives you access to Wi-Fi or even 3G or 4G mobile bandwidth.
Select the unit with the supported speed you need. Do not worry about installing a card in your computer. Enjoy the flexibility of a removable and transferrable dongle.