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Riser 3

This topic provides cable routing information for the riser 3.

Riser 3 power and sideband connection (Gen 4/Gen 5)​

The power and sideband connections for x8/x8 PCIe riser 3 and x16/x16 PCIe riser 3 are the same.

Figure 1. Riser 3 power and sideband connection (Gen4/Gen5)
Cable routing for 7mm drive backplane

FromTo
1 Riser 3 power connector1 Riser 3 power connector on the system board assembly
2 Riser 3 sideband connector2 Riser 3 sideband connector on the system board assembly

Riser 3 (Gen 5) signal cable routing​

Figure 2. Riser 3 (x16/x16 Gen 5) signal cable routing

Figure 3. Riser 3 (x8/x8 Gen 5) signal cable routing

From

To

From

To

1 Riser 3: MCIO 1, 21 Onboard: PCIe 3, 41 Riser 3: MCIO 11 Onboard: PCIe 3
2 Riser 3: MCIO 3, 42 Onboard: PCIe 1, 22 Riser 3: MCIO 32 Onboard: PCIe 2

Riser 3 (Gen 4) signal cable routing​

Figure 4. Riser 3 (x16/x16 Gen 4) signal cable routing

Figure 5. Riser 3 (x8/x8 Gen 4) signal cable routing

From

To

From

To

1 Riser 3: MCIO 11 Onboard: PCIe 11 Riser 3: MCIO 11 Onboard: PCIe 1
2 Riser 3: MCIO 22 Onboard: PCIe 4
3 Riser 3: MCIO 33 Onboard: PCIe 32 Riser 3: MCIO 22 Onboard: PCIe 4
4 Riser 3: MCIO 44 Onboard: PCIe 2