Riser card cable routing
Use the section to understand the cable routing for the riser card.
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.
Riser card power cable routing
Figure 1. Gen 4 riser card power cable routing  | Figure 2. Gen 5 riser card power cable routing  |
| From | To |
|---|---|
| 1 Left riser card: Riser power connector | PDB: Rear PCIe power 1 connector |
| 2 Right riser card: Riser power connector | PDB: Rear PCIe power 2 connector |
Gen 4 riser card signal cable routing
| Signal cable routing to upper processor board (CPU BD) | Signal cable routing to lower processor board (MB) |
|---|---|
 |  |
| From | To |
|---|---|
| 1 Left riser card: MCIO 1 connector | Upper processor board (CPU BD): PE3AB_L connector |
| 2 Left riser card: MCIO 2 connector | Upper processor board (CPU BD): PE3CD_L connector |
| 3 Right riser card: MCIO 1 connector | Upper processor board (CPU BD): PE3AB_R connector |
| 4 Right riser card: MCIO 2 connector | Upper processor board (CPU BD): PE3CD_R connector |
| 5 Left riser card: MCIO 3 connector | Lower processor board (MB): PE4AB_L connector |
| 6 Left riser card: MCIO 4 connector | Lower processor board (MB): PE4CD_L connector |
| 7 Right riser card: MCIO 3 connector | Lower processor board (MB): PE4AB_R connector |
| 8 Right riser card: MCIO 4 connector | Lower processor board (MB): PE4CD_R connector |
Gen 5 riser card signal cable routing
| Signal cable routing to upper processor board (CPU BD) | Signal cable routing to lower processor board (MB) |
|---|---|
 |  |
| From | To |
|---|---|
| 1 Left riser card: Slot 5/7 | 1a Upper processor board (CPU BD): PE3AB_L connector |
| 1b Upper processor board (CPU BD): PE3CD_L connector | |
| 2 Right riser card: Slot 5/7 | 2a Upper processor board (CPU BD): PE3AB_R connector |
| 2b Upper processor board (CPU BD): PE3CD_R connector | |
| 3 Left riser card: Slot 6/8 | 3a Lower processor board (MB): PE4AB_L connector |
| 3b Lower processor board (MB): PE4CD_L connector | |
| 4 Right riser card: Slot 6/8 | 4a Lower processor board (MB): PE4AB_R connector |
| 4b Lower processor board (MB): PE4CD_R connector |
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