Extra Display The Z+1 Pro extension kit increase the viewing area by an additional display above the monitors. It simplifies not only your work, but it also allows you to work more efficiently More Flexibility Turn your monitor horizontal in any direction in an easy and convenient way. Adjustment without Removing the Monitor With the Z+1 Pro mounting head, tighten or loosen the swivel per your need in just a few seconds. No need to take the monitor down.