I have Thinkpad SL510 laptop and DD-WRT flashed Netgear WNDR3300 router. The laptop can connect to the N-network when it is running at 2.4GHz but when I switch to 5GHz N-network, the laptop does not see it. Is it because SL510 does not support 5GHz or I have a problem with my configuration? Laptop is running 64-bit Win7 with all the updates installed. I am using the Lenovo wireless tools to connect to find and connect to the wireless networks.
Not all wireless network card supports 5GHz.
The following network card that supports 5GHz N network are:
Intel Centrino Advanced-N 6200
Intel Centrino Advanced-N 6205
Intel Centrino Advanced-N 6230
Intel Centrino Advanced-N + WiMAX 6250
Intel Centrino Ultimate-N 6300
Intel WiFi Link 5100 AGN
Intel WiFi Link 5300 AGN
Intel WiFi Link 5350
Intel Wireless WiFi Link 4965AGN
Legacy or low end wireless card or router would not support 5GHz N network.