Front + rear backplanes: 12 x 3.5" SAS/SATA + 4 x 2.5" AnyBay

This topic provides cable routing information for the front 12 x 3.5-inch SAS/SATA expander backplane with a 4 x 2.5-inch AnyBay rear backplane.

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

Front/Rear backplane signal 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 1	1 Backplane 4: SAS	1 Backplane 1: SAS 1	1 Backplane 4: SAS
2 Backplane 1: SAS 0	2 8i adapter Gen 4: C0 Gen 3: C0C1	2 Backplane 1: SAS 0	2 8i adapter Gen 4: C0 Gen 3: C0C1
3 Backplane 4: NVMe 0-1	3 Onboard: PCIe 8	3 Backplane 4: NVMe 0-1	3 Onboard: PCIe 10, 11
4 Backplane 4: NVMe 2-3	4 Onboard: PCIe 6	4 Backplane 4: NVMe 2-3	4 Onboard: PCIe 9

Rear backplane power cable routing​

Figure 3. Rear backplane power cable routing

From	To
1 Backplane 4: PWR	1 Onboard: 7mm power connector