My extension cable is making a slight noise. It's a bit annoying, but is this unsafe to use? - Quora
Why is my surge protector buzzing? I have a monster surge protector with the USB ports. last night I caught it make this very unnoticeable buzzing sound, if your close you can
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Ground Loop Noise Isolator with Jack 3.5mm Audio Cable Eliminate Buzzing Noise Humming Hissing Eliminator for Home Stereo - AliExpress
My extension cable is making a slight noise. It's a bit annoying, but is this unsafe to use? - Quora
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