WiFi technology uses radio signals for communication, typically operating at a frequency of 2.4 gigahertz (GHz ). Electronics that are "WiFi Certified" are guaranteed to interoperate with each other regardless of brand, as long as they use the same version of the technology. Companies designed this standard to cater to lightweight computing systems, which are typically mobile and designed to consume minimal power. Hardware developers produce mobile phones, laptops, and tablet computers that are all compatible with this wireless technology. Desktop computers can typically connect to such a network through the installation of a wireless card or dongle .
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