Best answer: It is surprisingly stable. If you have a solid desktop, there would probably be no shaking. The desktop I have it on right now is a 3' x 4' art table on an asymmetrical base (not four legs) and the desktop moves a bit while you're working on it, but not if you're just typing or 'mousing' normally. I haven't noticed any distracting motion from the monitors (I have a dual system) at all. Love them!
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