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New Modem Hum

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New Modem Hum

I was just upgraded yesterday to a new modem, CGM4140COM, Rev 2.2, with Firmware 3.6p13s1_PROD_sey.  The new modem is constantly emitting a low-level humming sound, loud enough to be irritating.  Is this normal? This is the first modem I have had over the years that I have been able to hear make noise.


Re: New Modem Hum

Well, the device does a built-in cooling fan. If it is excessively loud, try getting it swapped out for another. It may be malfunctioning.

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