what is a dongle used for
Conclusion. A USB Wi-Fi adapter or dongle is used to connect a computer or laptop to a Wi-Fi network. If your computer does not have an integrated network card, this type of device lets you connect without the need to install a card in your computer.dding a USB Wi-Fi adapter or dongle to a computer with an outdated integrated network card, for example a 802.11a card, is an easy, inexpensive way to upgrade the system. Remember to disable the onboard card before using the USB device, as the integrated adapter will keep running instead of the newly added one.