Lenovo 7D31, Maintenance Manual

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Figure 77. Installing an adapter to the system board
Step 4. Secure the adapter with a screw.
Step 5. Close the retention latch.
Install an adapter in the PCIe riser assembly
Watch the procedure
. A video of this procedure is available from the following links:
•
https://www.youtube.com/playlist?list=PLYV5R7hVcs-C6QgmsUMRG6ul0bHzrGmsG
•
https://list.youku.com/albumlist/show/id_54461099
Procedure
Notes:
• When installing the following adapters:
– Nvidia T4
– Mellanox ConnectX-6 HDR 100/100GbE QSFP56 1-port PCIe VPI Adapter
– Mellanox ConnectX-6 HDR 100/100GbE QSFP56 2-port PCIe VPI Adapter
– Mellanox ConnectX-6 HDR/200GbE QSFP56 1-port PCIe 4 VPI Adapter
make sure to adopt the following risers and PCIe slots, and do not install any other adapters to the risers:
– Zone 1:
slot 1
in x16/x16/x16 (x8 lanes) riser
– Zone 2:
slot 5
in x16/x16 riser
• When installing two units of Nvidia T4, make sure to meet the following system requirements.
– Maximal capacity of each memory module is 64 GB.
– Maximal quantity depends on processors wattage:
– Less than 165 watts: 48
– 165 to 250 watt: 24
– Maximal quantity of 2.5-inch drives is 16.
Chapter 4
.
Hardware replacement procedures
163