Lenovo ThinkSystem D4390 Hardware Installation And Maintenance Manual page 23

3) Repeat for the other side of rail assembly.
Step 2: Install the inner rails onto the chassis.
The inner rails are attached to the chassis with 4 screws, which are 2 screws on each side (M4x4L, refer to
and in Figure 2-7).
Align the key holes
locked.
Fix the inner rail with 2 screws
Figure 2-7: Install the inner rails onto the chassis
Repeat the above steps on the other side of the chassis.
Step 3: Install the CMA brackets on the outer rails.
of the inner rail with the keys on the chassis and slide the inner rail forward until
.
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