HP ProCurve 4202vl-48G Installation And Getting Started Manual page 36

Installing the Switch 4200vl Series
Installation Procedures
2.
.
partially install a screw
into the top hole of a
close (0.5-inch) pair on
both sides of the rack
Figure 2-9. Installing the Rack Screw
3.
lower the switch with
mounting brackets onto the
partially installed screws,
then tighten these screws
Figure 2-10. Rack mounting using the bracket notch
2-16
Partially install a screw (5/8-inch number 12-24) into the top hole of a pair
of holes that are 0.5 inches apart in each rack/cabinet upright as shown
in the illustration below. Ensure that the screws are at the same level in
each upright.
Place the switch in the rack and lower it so the notches in the bottom of
the bracket slide onto the screws, then tighten these screws.