Helix Modem/Router Making a Constant Humming Noise

   I have just switched to Helix Internet service since last week. I have notriced the Helix modem/router makes a constant humming sound. It isn't loud but since the room is always quiet, it is easily heard. It's annoying since it never ends and has a bit of high pitch into it. I am wondering if your modem/router also makes this noise or perhaps my device is faulty? I appreciate your repsonse.

Thank you.