Whoa!!! Hold on everyone. I've got some scoop on this particular problem.
As the OP stated they are using the "Intel PRO Wireless 4965 AG or AGN
The Intel Pro/WiFi 4965 comes in several flavors.
There is the:
Note the underscore... it means that the card has N on it but it's been disabled and can't be enabled
. This card comes in TWO varieties. Regular
which cannot be managed is sold to printer OEM's for use in network printers. The second variety is the Pro
which can be managed and is sold to laptop OEM's for use in laptop's.
This card has 802.11N enabled. And like the card above it comes in Regular
versions for the same end market uses. HOWEVER... this card has two additional varieties... they are: 802.11N (draft N) and 802.11N1 (draft N version +1).
ALL of these different versions are handled by the same driver: iwl4965-firmware.noarch
Whether you're getting N networking throughput depends upon which card you actually have.
What settings you can make to the card using the driver depends on whether the card is a managed or unmanaged card. AND
the managed cards have all the different security features whereas the unmanaged cards have no security features/standards
. Hence the reason why the latter's end use is network printers rather than laptops. But... CHEAP laptop OEM's will... yep you guessed it... put the unmanaged cards in the laptop so the user has no security and can't manage the card and the even cheaper OEM's will put in the 4965AG_ card and try to pass it off as 802.11N "capable" when it's not.
Finally, this card from Intel (as well as the 5000 series) has 3
antenna connection points rather than the standard 2 of most other cards. If your laptop only has 2 antenna leads it matters which connectionors you hook those leads up to. The black colored lead is connected to #1 and the white colored lead is connected to connector #3. Leaving connector #2 blank.
So... before we get all crazy about what the configuration software is doing or isn't doing what needs to happen is an EXACT identification of the card and to ensure that's it's been installed correctly.
To find out what card is actually installed Intel has a small utility you can download, install and run it's located: HERE
To find out all the little tid-bits I've just explained you need Intel's to view all the publications available on the card (make sure you read ALL of the small print VERY carefully too) HERE
Finally, if you're looking for a reliable
merchant that knows the differences between the cards then go here:
The 4965AGN Pro
I don't know where you can get the 4965AG_ card and it's versions.