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EMC Rails and Enclosures (CX4 Series Storage Systems) Field Installation Guide
Installing a 2U SPS tray (100-561-369) and SPS units in a cabinet
3. Tighten the four captive thumbscrews (shown in Figure 22) that 
secure the SPS units to the back of the tray.
Figure 22 Securing the 2U SPS rear
Installing latch brackets and bezel
This section describes how to install latch brackets and the bezel they 
support.
1. Use four Phillips M4 x 10-mm screws to secure latch brackets on 
each side of the front fastening bracket. (The brackets are stamped 
L and R for correct orientation.) See Figure 23.
2. Press the bezel onto the latch brackets until it snaps into place.
Figure 23 installing the latch bracket and bezel
You have installed an SPS tray and SPS units in the cabinet. 
EMC3480
Captive thumbscrews
CL4219