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Dell EMC PowerEdge R740xd Installation and Service Manual

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Backplane details

Depending on your system configuration, the drive backplanes supported in PowerEdge R740xd are listed here:
Table 1. Supported backplane options for PowerEdge R740XD systems.This table lists the supported hard drives supported options for PowerEdge R740xd systems.
SystemSupported backplane options
PowerEdge R740xd2.5 inch (x24) SAS/SATA/NVMe backplane or
2.5 inch (x24) SAS/SATA/NVMe backplane, 2.5 inch (x4) SAS/SATA backplane on the mid drive tray and 2.5 inch (x4) SAS/SATA backplane (back) or

2.5 inch (x24) SAS/SATA/NVMe backplane which supports 20 SAS/SATA drives and 4 NVMe drives, or

3.5 inch (x12) SAS/SATA backplane, or
3.5 inch (x12) SAS/SATA backplane, 3.5 inch (x4) SAS/SATA backplane on the mid drive tray and 3.5 inch (x2) SAS/SATA backplane (back), or
3.5 inch (x12) SAS/SATA backplane, 3.5 inch (x4) SAS/SATA backplane on the mid drive tray and 2.5 inch (x4) SAS/SATA backplane (back) or
3.5 inch (x12) SAS/SATA backplane and 3.5 inch (x2) SAS/SATA backplane (back) or
3.5 inch (x12) SAS/SATA backplane and 2.5 inch (x4) SAS/SATA backplane (back) or
2.5 inch (x24) NVMe backplane
3.5 inch (x12) Hybrid backplane with NVMe U.2 SSD
Figure 1. Back view of 24 x 2.5-inch backplane
This image shows back view of the 24 x 2.5 inch backplane.
  1. backplane to expander board connector (BP_XCEDE_3)
  2. backplane to expander board connector (BP_XCEDE_2)
  3. backplane to expander board connector (BP_XCEDE_31)
  4. signal connector (J_BP_SIG)
  5. power connector (J_PWR_A)
  6. power connector (J_PWR_B)
  7. PCIe connector (BP PCIE A2)
  8. PCIe connector (BP PCIE B2)
  9. PCIe connector (BP PCIE A1)
  10. PCIe connector (BP PCIE B1)
  11. PCIe connector (BP PCIE A0)
  12. PCIe connector (BP PCIE B0)
Figure 2. Back view of 24 x 2.5-inch (24 NVMe) backplane
This image shows back view of the 24 x 2.5 inch (24 NVMe) backplane.
  1. expander board connector B1 (PE1_B)
  2. expander board connector A1 (PE1_A)
  3. expander board connector B2 (PE2_B)
  4. expander board connector A2 (PE2_A)
  5. signal connector (J_SIG_A1)
  6. SAS connector (J_BP_SAS)
  7. power connector (J_BP_PWR_A1)
  8. signal connector (J_SIG_A2)
  9. power connector (J_BP_PWR_A2)
Figure 3. Back view of 12 x 3.5-inch backplane
This images shows back view of the 12 x 3.5 inch backplane.
  1. power connector (J_BP_PWR)
  2. SAS connector (A2 BP SAS)
  3. SAS connector (A1 BP SAS)
  4. signal connector (BP SIG1)
  5. SAS connector (J_SAS_A0_B0)
Figure 4. Back view of 3.5-inch backplane (mid drive tray)
This image shows back view of the 3.5 inch backplane (mid drive tray).
  1. power connector (J_BP_PWR)
  2. SAS connector (J_SAS_A1)
  3. signal connector (J_BP_SIG)
  4. SAS connector (J_SAS_B1)
  5. release tab (2)
Figure 5. Back view of 2.5-inch backplane (rear drive cage)
This image shows back view of 2.5 inch backplane (rear drive cage).
  1. signal connector (J_BP_SIG)
  2. power connector (J_BP_PWR_A)
  3. SAS connector (J_SAS_1)
Figure 6. Back view of 3.5-inch backplane (rear drive cage)
This image shows back view of 3.5 inch backplane (rear drive cage).
  1. power connector (J_BP_PWR_A)
  2. SAS connector (J_SAS_A)
  3. release pin (2)
  4. signal connector (J_BP_SIG)
Figure 7. Back view of the hybrid backplane with 3.5-inch Hot-Plug drive (both SATA and SAS) with NVMe U.2 SSD
This image shows back view of the hybrid backplane with 3.5-inch Hot-Plug drive (both SATA and SAS) with NVMe U.2 SSD
  1. PCIe connector (J_BP_PCIe_B)
  2. PCIe connector (J_BP_PCIe_A)
  3. SAS connector (J_SAS_C1)
  4. SAS connector (J_SAS_B1)
  5. power connector (J_BP_PWR_A1)
  6. SAS connector (J_SAS_A1)
  7. Sideband connector (J_BP_SIG1)

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