A WiFi USB adapter is a small device that adds wireless capability to a computer.
Since many computers, such as desktop PCs, don’t come with built-in WiFi adding a WiFi USB adapter can solve this problem.
They can also replace a broken internal wireless card or upgrade an old unit.
This also makes for an easy fix when a laptop’s internal card goes bad and needs a wireless connection.
Antenna size is rated in dBi, with 5dBi or larger units fairly common.
WiFi protocols are also a consideration since they have been steadily updated over the years.
|802.11b – WiFi 2||1999||2.4 GHz|
|802.11g – WiFi 3||2003||2.4 GHz|
|802.11n – WiFi 4||2009||2.4/5Ghz GHz|
|802.11ac – WiFi 5||2013||5 GHz|
|802.11ax – WiFi 6||2019||5 GHz|
New WiFi protocols are backward compatible with older protocols.
WiFi USB adapters make it easy to add wireless ability to almost any computer.
While a wired Ethernet cable can also be used, a cable can, at times, be unpractical.
A wireless internet solution is often the best, with better mobility and the ability to set up at any location.
There are many available that come in all shapes, sizes, and compatibility to fit almost any network scenario.
The downside to WiFi is the signal can be problematic at times and are not good the farther from a router it is located.