Sorry I've written in italian, so I translate here: I've made further tests and discovered that the 5GHz wireless appears when I disconnect the devices from all Wireless Networks. I've tried to...

@Kevin_Z Kevin, buongiorno e grazie per la risposta, ho effettuato ulteriori test ieri sera e ho verificato che la rete a 5GHz si vede a tratti si, a tratti no da tutte le device wireless, ho provato...

Hi, I've received the modem Sunday, I've installed it and configured it, the wired connection works, the internet connection works, the Wireless 2.4GHz works, The Wireless 5Ghz on the configuration...