A lot of people have been having trouble with the Linksys WMP600N wireless adapter. I finally managed to pull the full speed out of my card. I am pulling the same down as I was when I was connected directly to my router. I am pulling 3MB/s down :).
Full speed out of Linksys WMP600N card
Here is my setup that I will use in the example. I have a Motorola SB6120 cable modem with the Cisco-Linksys E2000 router (Firmware Version: 1.0.04). The instructions below will vary slightly based upon the router you have.
I enabled “Multimedia/Gaming Environment” on my wireless adapter. Do this by going into the network configuration properties, and into the advanced tab.
I switched my router’s Wireless Band over to 5GHz. I changed my Network Mode over to Wireless-N only. And I changed my Channel Width over to 40MHz only. (Please realize, by switching over to Wireless-N only you might not be able to connect with some devices. I happen to be running everything not hooked up directly to my router via Wireless-N. My laptop and both computers have wireless-n and I have my xbox, boxee, TV, etc. all hooked up directly to my router.)
Forward the port on your router for any application you are needing the bandwidth for. On the Cisco-Linksys router this can be done under the “Applications & Gaming” tab. I also recommend hard coding your IP address. If you follow all of the steps above, you should start pulling the maximum speed out of your Wireless-N adapter.
Another note, Wireless-N on the 5GHz range operates a little differently than A/B/G. Example, I am getting less bars than I was when operating in 2.4GHz mode, however, the connection is more stable and I pull the full speeds.