Plugged into the usb interface of the computer can be converted into a wifi signal, the scientific name of the portable WIFI. Of course, each manufacturer will define a new name for him (such as millet company's production is called millet WIFI; The one produced by Baidu is called small degree WIFI).
Portable wifi is a device that can convert the wired, 2.5G, 3G, 4G network or Internet connection on the computer into wifi signals, which can meet the needs of business and tourism people who are dependent on the network for mobile work. Divided into sim card and usb computer for two.
[Principle] Use the wired network, the wireless Internet chip (sim card) provided by the wireless operator or the computer's own Internet connection as the network source, and establish a wifi hotspot sharing network on this basis. Through this set of devices, the non-wifi access of the Internet connection can be extended to the wifi network for the Internet terminal use.