4 x 2.5'' NVMe backplane (one processor)

Use this section to understand the NVMe backplane cable routing for server model with four 2.5'' front drives.

To connect cables for a 7mm drive backplane, refer to 7mm drive backplane.

To connect cables for a rear NVMe drive backplane, refer to Rear NVMe/SAS/SATA drive backplane.

To connect power cables for a backplane for standard 2.5'' or 3.5'' drives, refer to Cable routing for backplane power.

To connect cables for intrusion switch, refer to Intrusion switch.

Cable routing for onboard configuration with one processor

The following table shows the mapping relationship between backplane connectors and system board connectors for onboard configuration.

The following figure illustrates the cable routing for the onboard configuration of 4 x 2.5'' front NVMe drive bays. Connections between connectors: 1 ↔ 1, 2 ↔ 2, 3 ↔ 3, ... n ↔ n

Figure 1. Mapping between 4 x 2.5'' front NVMe drive backplane and system board for onboard configuration with one processor (Gen 4)

Note

This cable routing is for the configuration without M.2 SATA/NVMe drive PCIe 4.0 backplane and front I/O module.

Table 1. Mapping between 4 x 2.5'' front NVMe drive backplane and system board for onboard configuration with one processor (Gen 4)

Backplane	From	To
Front BP (NVMe)	1 NVMe 0–1, NVMe 2–3	1 PCIe connectors 7, 8, and 9

Figure 2. Mapping between 4 x 2.5'' front NVMe drive backplane and system board for onboard configuration with one processor (Gen 5)

Table 2. Mapping between 4 x 2.5'' front NVMe drive backplane and system board for onboard configuration with one processor (Gen 5)

Backplane	From	To
Front BP (NVMe)	1 NVMe 0–1	1 PCIe connector 7
	2 NVMe 2–3	1 PCIe connectors 8 and 9