Lenovo ThinkSystem SD550 V3 User Manual page 162

To avoid potential danger, make sure to read and follow the safety information.
Attention:
• Read "Installation Guidelines" on page 43
you work safely.
• Touch the static-protective package that contains the component to any unpainted metal surface on the
node and chassis; then, take the component out of the package and place it on a static-protective
surface.
Important:
• To avoid throttling, make sure to adopt passive Direct Attach cables when network adapters with 100GbE
or higher speed are installed.
• Follow the installation sequence for GPU adapters: slot 2 >> slot 1.
• Follow the installation sequence for other PCIe adapters: slot 1 >> slot 2.
• A Gen 5 PCIe adapter must be installed in slot 2.
• For proper cooling and air flow, make sure to follow the installation rules and sequence:
– When a GPU adapter is installed in the riser, install a GPU air duct in the node (see
duct" on page 121).
– Follow the rules below to install different fillers.
– No riser cage installed in the node:
• Install a riser filler (vented).
– No PCIe adapter installed in the riser:
• Install a PCIe filler (vented) in each slot.
– One GPU adapter installed in the riser:
• Install the GPU adapter in slot 2.
• Install a GPU PCIe filler (non-vented) in slot 1.
– One PCIe adapter installed in the riser:
• Install the PCIe adapter in slot 1.
• Install a PCIe filler (vented) in slot 2.
Procedure
Step 1. If the PCIe riser card is not installed in the riser cage, install it now.
a. Align the screw holes of the PCIe riser card with the corresponding holes on the riser cage;
then, insert the PCIe riser card into place.
b. Tighten the screws to secure the PCIe riser card to the PCIe riser cage.
ThinkSystem SD550 V3 User Guide
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and "Safety inspection checklist" on page 44 to make sure that
"Install a GPU air