Helix Modem/Router Making a Constant Humming Noise

Good evening everyone. 

A noisy Helix gateway is definately not normal. There's a fan to cool down the gateway, that said, it has been observed to be noisier on some units. It is a known problem.We also seen gateways that were noisier when installed into a close area like an enclosure, a shelve or a corner that can resonate. We invite you to contact our tech support so we can handle the case and propose a remplacement unit that will be more silent. 

You can reach us by chat, by phone or through facebook, we will be glad to assist you with that. 

Thanks for asking. It is a very good question. 

-Alex D