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Microsoft Windows 10 (64-bit)

I recently purchased a Thunderbolt Dock G4 for my Zbook 15 G5. When I have it plugged into the laptop, I get a lot of static and crackling from my external speakers. The speakers are plugged straight into the laptop 3.5mm audio jack. There is no audio jack on the dock. When I unplug the dock the speaker noise goes away. Is there some kind of interference coming from the dock or is maybe trying to send an audio signal of some kind to the laptop? Any help would be great.

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