Lenovo 5457 Installation And Service Manual page 318

3. Touch the static-protective package that contains the system board to any unpainted metal surface on
the server. Then, remove the system board from the package.
4. Lower the system board into the chassis. Pay attention to the positions of the standoffs as they will be
used later.
Figure 240. System board installation for 4U server model with non-hot-swap power supplies
5. Gently push the system board by the side nearest to the fan cage to insert the external input/output
connectors into their respective holes in the chassis.
Figure 241. Pushing external input/output connectors into chassis for 4U server model with non-hot-swap power
supplies
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Standoffs