PCIe switch board cable routing

PCIe switch board signal cable routing​

Signal cables

Prebend cable for PCIe switch board signal cables​

1	Prebend direction A
2	Prebend direction B

Use a Phillips screwdriver or a flat screwdriver as tool.

Place the screwdriver at a 45-degree angle to the connector. Carefully bend the cable as illustrated.

See the following illustration for prebend direction:

GPU management cable routing​

GPU management cable

Figure 1. PCIe switch board cable routing (GPU management cable)

Cable	From	To
1	PCIe switch board: GPU management connector (MGMT)	System board: PCIe switch sideband connector (PCIE SW SIDEBAND)

Note

Ensure to keep the GPU management cable lower than the circle mark on the chassis as illustrated.

PCIe switch board power and sideband cable routing​

Figure 2. PCIe switch board cable routing (power and sideband cables)

Cable	From	To
1	PCIe switch board: Power distribution board power connector 1 (PDB PWR1)	Power distribution board: PCIe switch board power connector 1 (FRONT RISER PWR1)
2	PCIe switch board: Power distribution board sideband connector 1 (PDB SB1)	Power distribution board: PCIe switch board sideband connector 1 (SWSB1)
3	PCIe switch board: Power distribution board power connector 2 (PDB PWR2)	Power distribution board: PCIe switch board power connector 2 (FRONT RISER PWR2)
4	PCIe switch board: Power distribution board sideband connector 2 (PDB SB2)	Power distribution board: PCIe switch board sideband connector 2 (SWSB2)

After you finish

Figure 3. Securing cables with cable ties

Bundle cables connected to the PCIe switch board​

Divide the cables connected to the PCIe switch board into six bundles, and secure them to the crossbar with cable ties.

Bundle	Cable	Connector (on PCIe switch board)
1	One PCIe switch board power cable One PCIe switch board sideband cable	PDB PWR1 PDB SB1
2	One backplane 1 signal cable Two PCIe switch board signal cables	NVME1 MCIO1 MCIO2
3	One backplane 1 signal cable Two PCIe switch board signal cables	NVME3 MCIO3 MCIO4
4	One backplane 2 signal cable Two PCIe switch board signal cables	NVME5 MCIO5 MCIO6
5	One backplane 2 signal cable Two PCIe switch board signal cables	NVME7 MCIO7 MCIO8
6	One PCIe switch board power cable One PCIe switch board sideband cable	PDB PWR2 PDB SB2

Bundle cables connected to the system board​

Divide the PCIe switch board signal cables into four bundles, and secure them with cable ties as illustrated.

Bundle	Cable	Connector (on system board)
1	Four PCIe switch board signal cables	MCIO1A MCIO1B MCIO9A MCIO9B
2	Four PCIe switch board signal cables	MCIO2A MCIO2B MCIO3A MCIO3B
3	Four PCIe switch board signal cables	MCIO5A MCIO5B MCIO10A MCIO10B
4	Four PCIe switch board signal cables	MCIO6A MCIO6B MCIO7A MCIO7B

Bundle cables on the front drive backplane side​

Divide the drive backplane signal and power cables, GPU management cable, front I/O module cables, and integrated diagnostics panel cable into four bundles, and secure them with cable ties as illustrated.

Bundle	Cable	Connector
1	One integrated diagnostics panel cable	Integrated diagnostics panel
2	Two backplane 1 signal cables One backplane 1 power cable	Backplane 1: NVMe connector 0-1 Backplane 1: Power connector Backplane 1: NVMe connector 2-3
3	Two backplane 2 signal cables One backplane 2 power cable One GPU management cable	Backplane 2: NVMe connector 0-1 Backplane 2: NVMe connector 2-3 Backplane 2: Power connector From PCIe switch board: GPU management connector (MGMT)
4	One GPU management cable Two front I/O module cables	To system board: PCIe switch sideband connector (PCIE SW SIDEBAND) Front I/O module