4. Working at the front of the rack cabinet, identify the two standard rack units
(2U) of space in the rack into which you want to install the support rails.
Figure 8 shows two rack units with the front mounting holes identified.
v ▌1▐ Upper rail mounting bracket pin
v ▌2▐ Lower rail mounting bracket pin
Figure 7. Installing the rail spring
Figure 8. Hole locations in the front of the rack
Chapter 2. Installing the hardware 11