How do I enable 5ghz connectiosn through this router.I have 2 DWA-140s and neither of them is functioning at 5ghz that I can see.At least the DIR says no Clients are connected at 5ghz and all clients are connectied at 2.4ghz.Do I need to change something in my Router settings?Its currently setup to run in Both 2.4 and 5ghz.