There is no point in buying the latest wireless router that supports dual band 450 Mbps connection, if your computer adapter does not support the same. Many computers do not come with wireless adapters and even if they come, they have some lower version of the adapter that supports lesser speeds (like 54 Mbps, 150 Mbps, etc).
That’s where external USB based wireless adapters like the TRENDnet 450 Mbps dual band external USB adapter, comes into the picture.
A dual band wireless adapter supports both 2.4 Ghz and 5 Ghz operation. The 5 Ghz band is relatively interference free and hence provides better performance and gives higher throughput. If you want your wireless router/access point to give a higher distance coverage, the 2.4 Ghz band might be a better option.
If your access point and wireless client adapter supports both 2.4 Ghz and 5 Ghz frequencies, it is possible to select the 5 Ghz operation for performance demanding applications like HD gaming, HD video, multimedia, graphics, etc. One might still want to select the 2.4 Ghz band they want their wireless range to be higher (If Wi-Fi signals are expected even in second floor and ground floor, when the wireless router is kept at the first floor, for example).
Since computers have many USB ports, connecting the wireless N adapter to one of the USB ports should be simple and easy. Besides, an external USB adapter can be carried around and used with multiple PC’s (at different times). 450 Mbps is a lot of speed and you may not feel the kind of delays that you might be used to with slower wireless adapters. The price of these high-speed 450 Mbps wireless client adapters (and routers) have decreased a lot in recent years.
Of course, you cannot get the rated 450 Mbps of speed but the actual performance can be near to that value if your computer and wireless router are quite near to each other. The speed of wireless systems always decrease with increasing distance. The speed of wireless systems can also decrease due to other factors like interference, building materials, network traffic, etc.
One more advantage of using 450 Mbps wireless adapters/routers is that, even if multiple computers connect simultaneously to the router, each system can still get a substantial amount of bandwidth. Remember that bandwidth in wireless systems is always shared.
It is good if you can set the WMM (Wireless Multi Media) and Data prioritization parameters in both the wireless adapter and wireless access points to suit the type of application you want to give priority over others. If you run more video/play more games, try giving higher priority to video/audio/multimedia files.
Most of these high end wireless adapters and wireless routers support older technologies like 802.11 a/b/g and hence even if the wireless adapter wants to connect to an older access point, it can still connect.
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