What Is a USB WiFi Adapter?
To be able to connect to a wireless network, your computer needs a wireless network adapter. A USB wireless network adapter is a device that connects a laptop or desktop computer to a wireless network without using a cable.
Installing a USB WiFi Adapter
When buying a USB WiFi adapter, the main thing you should look for is whether it’s a “802.11g” or “802.11n”, or sometimes called “wireless G” and “wireless N”. 802.11n is the newer and faster technology, but if the router you connect to uses the 802.11g standard, then using a “n” adapter has no added benefit over using a “g” adapter. Compatibility shouldn’t be an issue, as the 802.11n technology is backwards compatible with 802.11g.
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Another issue is bandwidth. Large institutions and companies that have made infrastructure investments in Fast Ethernet, 10 Gigabit Ethernet or Gigabit Ethernet are not going to rip that out and put in a shared bandwidth system. But that will change as WiFi evolves to 802.11n networks that offer 600 Mbps of bandwidth. Right now some sales offices, small branch offices and greenfields, etc. could go to WiFi, but the bandwidth it offers today would not be sufficient for them to run some of their bandwidth intensive applications.
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What’s more, wireless Internet through home network can also be accessed by neighbors without your knowledge. To resolve this issue, a password security can be configured so that only authorized devices can have access to the network. With the growing risk of security issues, the security protocols for Wi-Fi log on have been made available with the employment of Wi-Fi Protected Access (WPA) and the Wi-Fi Protected Access 2 (WPA2).
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