Recently I purchased E4200 wireless router. I have enabled both 2.4 and 5 GHz channel with different SSID. Both are recognized by a 3 year old W500 laptop with 32 bit windows XP. But the 5 GHz channel is not recognized in my new (4 month old) W520 Windows 7 64 bit OS. What configuration do I need to do for W520 to recognize the 5GHz channel?
This may apply to other Lenovo laptops.
The following wireless card that allows your laptop to recognize the 5GHz channel are:
Intel Centrino Ultimate-N 6300 AGN
Intel Centrino Advanced-N + WiMAX 6250 AGN
Intel Centrino Advanced-N 6205 AGN
Other wireless card only supports 2.4GHz channel.