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PCIe riser cable routing

Use the section to understand the cable routing for the PCIe risers.

Note
  • Connections between connectors; 1↔1, 2↔2, 3↔3, ... n↔n
  • When routing the cables, ensure that all cables are routed appropriately through the cable guides.
  • A label on each cable indicates the connection source and destination. This information is in the format RY-X and P Z. Where Y indicates the PCIe riser number, X indicates the connector on the riser card, and Z indicates the connector on the system board assembly.

PCIe riser cable routing​

Figure 1. PCIe riser cable routing
PCIe riser cable routing
FromToLabel
1 PCIe riser 2 signal connector (MCIO 1)System board assembly: PCIe Riser 2 signal connectors (MCIO4B)
  • R2-MCIO 1
  • MCIO 4B
2 PCIe riser 2 signal connector (MCIO 2)System board assembly: PCIe Riser 2 signal connectors (MCIO4A)
  • R2-MCIO 2
  • MCIO 4A
3 PCIe Riser 2 power connector (RISER PWR)System board assembly: PCIe Riser 2 power and sideband connector (BP PWR/SIG 1)
  • R2-Riser PWR
  • PWR/SIG 2
4 PCIe riser 1 signal connector (MCIO 1)System board assembly: PCIe Riser 1 signal connectors (MCIO8A)
  • R1-MCIO 1
  • MCIO 8A
5 PCIe riser 1 signal connector (MCIO 2)System board assembly: PCIe Riser 1 signal connectors (MCIO8B)
  • R1-MCIO 2
  • MCIO 8B
6 PCIe Riser 1 power connector (RISER PWR)System board assembly: PCIe Riser 1 power and sideband connector (BP PWR/SIG 3)
  • R1-Riser PWR
  • PWR/SIG 3

DPU power cable routing​

Figure 2. DPU power cable routing


DPU power cable routing
CableFromTo
1DPU adapter: Power connectorPCIe riser 1 or 2: Power connector