Not getting Wireless N Speeds

Netgear Wndr3300 ranegmax dual band wire...
September 7, 2010 at 11:44:05
Specs: Windows Vista, 2.5/ 3 MB
I have a HP pavillion dv2915nr laptop, and I just replaced the built-in wireless G card with a wireless N capable Intel 4965AGN mini-PCIe card (it has 3 antenna ports but my laptop only has 2 wires, but I've read that you don't need to be using all 3 antennae to get N speeds).
I have a Netgear WNDR3300 dual band N router, set to "Up to 270 mbps at 2.4 GHz" mode, channel 11.

I also have a separate D-Link DAP-16522 wireless bridge that connects my desktop PC, NAS drive, and print server to the wireless network. The laptop, of course, connects wirelessly
direct to the Netgear router.

I'm getting an excellent signal and a stable connection and it works fine for internet use. But the reason I upgraded to wireless N is for home network video streaming, and currently I'm getting no more than 15 mbps throughput on files I transfer from the NAS drive to my wireless laptop. Also, when I view the status of my laptop's wireless connection, it never shows more than the maximum G speed of 54 mbps.

I am not expecting anywhere near the advertised 300 mbps wireless N speeds, but since I paid for N equipment, I'd like a little more bang for the buck than I'm getting now. I've tried numerous tweaks- changing the security and other router settings, moving router and laptop around, etc. I have even tried a separate USB wireless N adapter and I'm still getting only G speeds. Any ideas on why I'm not getting N speeds? Thanks in advance for your help!

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September 7, 2010 at 11:52:45
A network will run at the slowest common denominator, aka your G Wireless Bridge:

"As far as the wireless band goes, 802.11n devices can operate on 2.4 or 5GHz bands. However, to use 5GHz all connected devices must be 802.11n compliant. Note, too, the 5GHz band will significantly decrease the maximum range. The tradeoff is that there will be much less interference, and 5GHz is drastically more effective at penetrating concrete and brick walls."

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September 8, 2010 at 13:43:59
Thanks for the reply X86. I'm not sure if the bridge would be slowing down the connection, because it is a wireless N dual-band bridge, and I believe it should automatically operate in the same mode the router is?
One thing that I'm thinking is that in the Intel adapter properties, only a, b, and g are listed as options for "Wireless Mode". So I got a USB wireless N adapter to test it out, but even that was only getting about the same speeds as the adapter. I'm stumped, and Netgear support is pretty much useless. Any other suggestions? Thanks...

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