Riser 3/4

This topic provides cable routing information for the riser 3/4, which provide four low-profile (4LP) PCIe slots.

Cable routing for 4LP riser 3/4​

Figure 1. Riser 3/4 power and sideband connection

From		To
1 Riser 3 and riser 4 power connectors		1 Riser 3 power connector on the system board assembly
2 Riser 3 and riser 4 sideband connectors		2 Riser 3 sideband connector on the system board assembly

Figure 2. Riser 3/4 signal connection

From		To
1 Riser 3: J2		1 Onboard: PCIe 1
2 Riser 3: J4		2 Onboard: PCIe 2
3 Riser 4: J2		3 Onboard: PCIe 3
4 Riser 4: J4		4 Onboard: PCIe 4