Onboard connectors

This topic provides cable routing information for the front 12 x 3.5" SAS/SATA + middle 8 x 2.5" NVMe (using two 4 x 2.5" NVMe backplanes) configuration with onboard connectors.

Front backplane cable routing​

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

Figure 1. Cable routing to onboard SATA connectors

From	To
1 Backplane 1: SAS 0, SAS 1	Onboard: SATA 0, SATA 1
2 Backplane 1: SAS 2	Onboard: SATA 2

Middle backplane cable routing​

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

Figure 2. Middle backplane signal cable routing		Figure 3. Middle backplane power cable routing
From	To	From	To
1 Backplane 5: NVMe 0-1	Onboard: PCIe 7	1 Backplane 5: PWR Backplane 6: PWR	Onboard: backplane power Onboard: backplane sideband Riser 1: PWR
2 Backplane 5: NVMe 2-3	Onboard: PCIe 8
3 Backplane 6: NVMe 0-1	Onboard: PCIe 1
4 Backplane 6: NVMe 2-3	Onboard: PCIe 2