Dell PowerEdge 2850 - Manual (Page 17)

Rack Installation Guide
1-15
4 Tilt the back of the system down while aligning the back shoulder screws on the sides
of the system with the back slots on the slide assemblies.
5 Engage the back shoulder screws into their slots.
Figure 1-7. Installing the System in the Rack (RapidRails or VersaRails)
6 Lower the front of the system and engage the front and middle shoulder screws in their slots
(the middle slot is just behind the yellow system release latch).
When all shoulder screws are properly seated, the system locking mechanism at the front
of each slide assembly clicks and locks the system into the slide assembly.
7 Press up on the slide release latch at the side of each slide to slide the system completely
into the rack.
system locking mechanism
shoulder screw
on system