Onboard connectors

This topic provides cable routing information for the front 12 x 3.5-inch SAS/SATA + rear 2 x 3.5-inch/4 x 3.5-inch SAS/SATA configuration with onboard connectors.

The following uses the 2 x 3.5-inch SAS/SATA rear backplane as an example for illustration. The cable routing for the 4 x 3.5-inch SAS/SATA rear backplane is similar.

Connections between connectors: 1 ↔ 1, 2 ↔ 2, 3 ↔ 3, ... n ↔ n

Front backplane cable routing​

Figure 1. Cable routing when two processors installed		Figure 2. Cable routing when one processor installed
From	To	From	To
1 Backplane 1: SAS 0 Backplane 4: SAS	1 Onboard: PCIe 5	1 Backplane 1: SAS 0, SAS 1	1 Onboard: PCIe 9
2 Backplane 1: SAS 1, SAS 2	2 Onboard: PCIe 9	2 Backplane 1: SAS 2	2 Onboard: PCIe 11

Rear backplane cable routing​

Figure 3. Cable routing when two processors installed		Figure 4. Cable routing when one processor installed
From	To	From	To
1 Backplane 4: PWR	1 Riser 2: PWR1, PWR2	1 Backplane 4: PWR	1 Riser 2: PWR1, PWR2
		2 Backplane 4: SAS	2 Onboard: PCIe 10