can not find 5GHz SSID

[seaice]

Hi, I bought a TP-WRD3600 recently and installed the Gargoyle there. Everything else working fine - my ipad and appleTV can find both 2.4GHz and 5GHz SSID. (I have 2.4GHz channel 11, channel width 20MHz; 5GHz channel 36, channel width 20MHz). One of my PC downstairs have a powerlink n150 wireless adaptor which supports 802.11 n/g/b. However it can only find the 2.4GHz SSID, not the 5GHz one. Anyone know the reason? Do I need to change to a new wireless adaptor here? Thanks.

[Lingula]

That device only does 2.4 - Google is your friend.

You may not need a new adapter - throughput may not be any better on 5Ghz, depending on how many obstacles and how much interference is present. Test throughput and stability of the connection before considering a new adapter. If you get a new one, avoid Intel.