09-06-2012, 10:15 AM
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Join Date: Sep 2012
I've recently acquired a F5D8053 USB adaptor. I've done a bit of digging into why only 150Mbps is achievable.
Routers using the 2.4GHz band can use a narrow (20MHz) or wide (40MHz) bandwidth. Narrow bands support 150Mbps, while wide bands support 300Mbps.
I expect when the original driver for the F5D8053 USB adaptor was released (supporting Windows 2000, XP, Vista) it supported the 40MHz bandwidth. This was before the Wireless N specification was finalised.
When the Wireless N specification was finalised, manufactures had to place "consideration" into allowing users use the 40MHz bandwidth. This bandwidth can cause problems if your neighbours are also using Wireless N.
When Belkin released new drivers for Windows 7, rather than support 40MHz, they just removed the functionality from the driver. So it'll only support 20MHz , which means it's limited to 150Mbps.
I've contacted Belkin to see what they say about this. They could make the excuse that the original packaging stated 300Mbps on Windows 2000, XP and Vista.