Once mounted, you can adjust each monitor with 90-degree tilts and swivels and 360-degree rotations. You have two options for affixing it to your desk. One option is the C-clamp that fits desks ...

A monitor arm replaces the stand that comes with ... it has a VESA-compatible mount on the back. The other end of the monitor arm usually just clamps onto a desk. Sometimes, there's an option ...