Attention: You can install the rails into the racks with round holes or square holes. Each rail comes
preinstalled with four screw pins used for round holes. The screw pins used for square holes are provided
separately. Ensure that you use the pins that are appropriate for the mounting holes in your rack. Refer to the
following figure.
Figure 9. Screw pin types included with rail kit
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Lenovo ThinkAgile CP Hardware Installation Guide