Acer G520 series manual Vertical mounting hole pattern

142 Appendix C: Altos G520 Rack Installation Guide

Vertical mounting hole pattern

The four vertical rails of a rack contain mounting holes arranged in a manner shown in the figure below:

The system occupies 5U in the rack. Count the U positions and hole numbers from the bottom up.

Note: The unit of measurement used in this document is "U"

(1U = 1.75 inches or 44.45 mm). The total sum of the heights of all components in the rack measured in "U" cannot exceed the height of the rack. For more information, refer to the documentation that came with your system rack.

The distance from the center of two holes with closer spacing to the center of the next pair is equivalent to 1U.

When installing components, you must start your measurement from the center of the two holes with closer spacing. Otherwise, the screw holes on the component may not match those on the rack.