My previous router's speed is 20, and my new one is 60. And how to change it to 40 mhz channel? A link will be very helpful. Thanks
Well somewhere inside the router's configuraton settings, there might be a channel speed section; For some reason, sometimes they come set at 20 and not 40, and when you change it to the higher number it let's you connect at the higher speeds.
You can only connect as fast as your slowest device, be it the wireless card, or the wireless router.