HP 5400R zl2 Series Nstallation And Getting Started Manual page 54

Installing the HP 5400R zl2 Switches
Installation Procedures
2.
3.
2-18
Install a screw half-way into this cage nut.
Align the included Rack Mount Bracket such that the half-hole lines up
with the screw, install additional cage nuts at each hole position in the
bracket.
1 Rack Brackets
2 Flat Head
Screws