What is a Wireless N USB Adapter? And how do I use it and what does it do?

I have Dell Dimension E520 computer. I want to know if a Wireless N USB Adapter will let me go online with my ps3. Thanks.What is a Wireless N USB Adapter? And how do I use it and what does it do?
Wireless B / G / N are variant network speeds. Each letter in the higher alphabet is a faster speed depending on what router you purchased to match the adapter you have.



You need a B / G / N router and a matching adapter to access the internet service.



Some routers have G and N to provide G and N adapter support but can affect other users connected on the N based.

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