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Dell EMC PowerEdge R740xd Technical Specifications

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Expansion bus specifications

The PowerEdge R740xd system supports up to eight PCI express (PCIe) generation 3 expansion cards that can be installed on the system board using expansion card risers. The following table provides detailed information about the expansion card riser specifications:

Table 1. Expansion card riser configurationsThis table provides information about the expansion card riser configuration for PowerEdge R740xd system.
Expansion card riser PCIe slots on the riser Height Length Link
Riser 1A Slot 1 Full Height Full Length x16
Slot 3 Full Height Half Length x16
Riser 1B Slot 1 Full Height Full Length x8
Slot 2 Full Height Full Length x8
Slot 3 Full Height Half Length x8
Riser 1D Slot 1 Full Height Full Length x16
Slot 2 Full Height Full Length x8
Slot 3 Full Height Half Length x8
Riser 2A or 2E or 2D or 2F Slot 4 Full Height Full Length x16
Slot 5 Full Height Full Length x8
Slot 6 Low Profile Half Length x8
Riser 2B Slot 4 Low Profile Half Length x8
Riser 2C Slot 4 Low Profile Half Length x16
Riser 3A or 3B Slot 7 Full Height Full Length x8
Slot 8 Full Height Full Length x16
Table 2. Expansion card riser specificationsThis table provides information about the expansion card riser configuration for PowerEdge R740xd system.
Riser configuration and supported risers Slot description PCIe slots on riser 1 (Height and length) Processor connection PCIe slots on riser 2 (Height and length) Processor connection PCIe slots on riser 3 (Height and length) Processor connection
Riser configuration 0 with or without rear storage (No riser) No PCIe slots (only rear storage) N/A N/A N/A N/A N/A N/A
Riser configuration 1 with or without rear storage (1B+2 B) Four x8 slots and rear storage Slot 1: x8 full-height, full length Processor 1 Slot 4: x8 low profile, half length Processor 1 N/A N/A
Slot 2: x8 full-height, full length Processor 1
Slot 3: x8 full-height, half length Processor 1
Riser configuration 2 with or without rear storage (1B+2C) Three x8 and one x16 slots and rear storage Slot 1: x8 full-height, full length Processor 1 Slot 4: x16 low profile, half length Processor 2 N/A N/A
Slot 2: x8 full-height, full length Processor 1
Slot 3: x8 full-height, half length Processor 1
Riser configuration 3 (1A+2A) Two x8 and three x16 slots Slot 1: x16 full-height, full length Processor 1 Slot 4: x16 full-height, full length Processor 2 N/A N/A
N/A N/A Slot 5: x8 full-height, full length Processor 2
Slot 3: x16 full-height, half length Processor 1 Slot 6: x8 low profile, half length Processor 1
Riser configuration 4 (1A+2A+3A) Three x8 and four x16 slots Slot 1: x16 full-height, full length Processor 1 Slot 4: x16 full-height, full length Processor 2 Slot 7: x8 full-height, full length Processor 2
N/A N/A Slot 5: x8 full-height, full length Processor 2 Slot 8: x16 full-height, full length Processor 2
Slot 3: x16 full-height, half length Processor 1 Slot 6: x8 low profile, half length Processor 1
Riser configuration 15 (1A+2E+3B) Three x8 and four x16 slots Slot 1: x16 full-height, full length Processor 1 Slot 4: x16 full-height, full length Processor 2 Slot 7: x8 full-height, full length Processor 2
N/A N/A Slot 5: x8 full-height, full length Processor 2 Slot 8: x16 full-height, full length Processor 2
Slot 3: x16 full-height, half length Processor 1 Slot 6: x8 low profile, half length Processor 1
Riser configuration 5 (1B+2A+3A) Six x8 and two x16 slots Slot 1: x8 full-height, full length Processor 1 Slot 4: x16 full-height, full length Processor 2 Slot 7: x8 full-height, full length Processor 2
Slot 2: x8 full-height, full length Processor 1 Slot 5: x8 full-height, full length Processor 2 Slot 8: x16 full-height, full length Processor 2
Slot 3: x8 full-height, half length Processor 1 Slot 6: x8 low profile, half length Processor 1
Riser configuration 6 (1D+2A+3A) Five x8 and three x16 slots Slot1: x16 full-height, full length Processor 1 Slot 4: x16 full-height, full length Processor 2 Slot 7: x8 full-height, full length Processor 2
Slot 2: x8 full-height, full length Processor 1 Slot 5: x8 full-height, full length Processor 2 Slot 8: x16 full-height, full length Processor 2
Slot 3: x8 full-height, half length Processor 1 Slot 6: x8 low profile, half length Processor 1
Riser configuration 16 (1D+2E+3B) Five x8 and three x16 slots Slot1: x16 full-height, full length Processor 1 Slot 4: x16 full-height, full length Processor 2 Slot 7: x8 full-height, full length Processor 2
Slot 2: x8 full-height, full length Processor 1 Slot 5: x8 full-height, full length Processor 2 Slot 8: x16 full-height, full length Processor 2
Slot 3: x8 full-height, half length Processor 1 Slot 6: x8 low profile, half length Processor 1
Riser configuration 9 (1A+2D+3A) or Riser configuration 17 (1A+2F+3B) Three x8 and four x16 slots Slot 1: x16 full-height, full length Processor 1 Slot 4: x16 full-height, full length Processor 2 Slot 7: x8 full-height, full length Processor 2
N/A N/A Slot 5: x8 full-height, full length Processor 2 Slot 8: x16 full-height, full length Processor 2
Slot 3: x16 full-height, half length Processor 1 Slot 6: x8 low profile, half length Processor 1
NOTE:
  • Riser slots are not hot pluggable.
  • Internal cable connectors are not hot pluggable.

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