Users Guide
support.dell.com Rack Installation Guide 1-5
If you have a 42-U rack cabinet, slide the latch's push-button cover up as far as it
will go, press the push button, rotate the handle clockwise until the latch
releases, and then pull the door open (see Figure 1-3).
Figure 1-3. Opening the 42-U Rack Cabinet Front Door Latch
push button
push-button
cover
handle