If you have a specialized keyboard or mouse with additional buttons or features, it will not work properly if you rely on those features. This KVM maps your devices as normal devices, so your system cannot find your keyboard and mouse. I'm using a Logitech gaming mouse with extra buttons that don't work through this switch. I only gave it 3 stars because the original specs didn't say that, only for a mechanical keyboard (which works if you're just typing).
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