Hello,
I have the above bits of hardware, I have just got the Linksys. I set it up to use 2.4 and 5ghz networks, my MacBook Pro, Mac Mini and iPhone 4s can all see and connect to the 2.4ghz network. My MacBook Pro (late 2013) at first saw the 5ghz network but now can't not even under Nearby WiFi networks in About this Mac. The Mac Mini can see the network in that section but not in the WiFi connection menu at the top of the screen. Not sure that the 4s should be able to see the 5ghz network. Anyone got any ideas as to what settings are correct?