Onboard connectors + Three retimer cards

The following shows the cable connections for the front 24 x 2.5-inch NVMe configuration with three retimer cards.

To connect the processor interconnection cable when two processors are installed, see Processor interconnection cable routing.

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

Figure 1. NVMe cable routing to onboard connectors and retimer cards

From	To
1Backplane 1: NVMe 0-1	1Onboard: PCIe 5
2Backplane 1: NVMe 2-3	2Onboard: PCIe 7
3Backplane 1: NVMe 4-5	3Onboard: PCIe 6
4Backplane 1: NVMe 6-7	4Onboard: PCIe 8
5Backplane 2: NVMe 4-5	5Retimer card: C0
6Backplane 2: NVMe 6-7	6Retimer card: C1
7Backplane 2: NVMe 0-1	7Retimer card: C0
8Backplane 2: NVMe 2-3	8Retimer card: C1
9Backplane 3: NVMe 0-1	9Retimer card: C0
10Backplane 3: NVMe 2-3	10Retimer card: C1
11Backplane 3: NVMe 4-5	11Onboard: PCIe 9
12Backplane 3: NVMe 6-7	12Onboard: PCIe 10, 11