I'm using a Intel Ultimate N WiFi Link 6300 in my G53SW, and the only problem whit is, is that there is only 2 antennas in my model (don't no about your model), and i have just putted the 3. under the HDD bay and it working nice -Cb
Mine G53SW brokes it's pin about 4 weeks ago, called Asus Denmark, and the guy i talked whit, HAD heard about it, and gave me a RMA number.Sent my Laptop ind, and 2½ weeks after i got it back whit a new mobo. Great service, and ofc under Warranty:D