That has it's own power supply, right? "Mosquito noise" usually gets into an interface (or USB mic) through the USB power.
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I've been getting the same sound on this monitors, but also on my computer simple speakers that are plugged into the jack of it.
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It's good to know the monitors are OK.
...But if the monitors are OK the points to the interface.
Maybe it's picking-up some electro-magnetic interference. Try moving the interface (and cables) around to see if the noise gets better or worse. Try taking your cell phone out of the room.
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It happens also when I plug my guitar to play and record
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Of course guitars are famous for hum/buzz pickup but you know what that sounds like.
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, even on my microphone (SM7B)
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That's a famously "weak" mic which degrades the signal-to-noise ratio and the noise is boosted when you boost the signal. But, I'd expect regular-constant preamp hiss.