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Table 18. Expansion card riser specifications
Riser
Slot description PCIe slots on
configuration
and supported
risers
Riser
No PCIe slots
configuration 0
(only rear
(No riser)
storage)
Riser
configuration 1
Four x8 slots
(1B+2B)
Riser
Three x8 and
configuration 2
one x16 slots
(1B+2C)
Riser
Two x8 and
configuration 3
three x16 slots
(1A+2A)
Riser
Three x8 and
configuration 4
four x16 slots
(1A+2A+3A)
Riser
Six x8 and two
configuration 5
x16 slots
(1B+2A+3A)
Riser
Five x8 and
configuration 6
three x16 slots
(1D+2A+3A)
Processor
riser 1 (Height
connection
and length)
N/A
N/A
Slot 1: x8 full-
Processor 1
height, full length
Slot 2: x8 full-
Processor 1
height, full length
Slot 3: x8 full-
Processor 1
height, half length
Slot 1: x8 full-
Processor 1
height, full length
Slot 2: x8 full-
Processor 1
height, full length
Slot 3: x8 full-
Processor 1
height, half length
Slot 1: x16 full-
Processor 1 Slot 4: x16 full-
height, full length
N/A
N/A
Slot 3: x16 full-
Processor 1 Slot 6: x8 low
height, half length
Slot 1: x16 full-
Processor 1 Slot 4: x16 full-
height, full length
N/A
N/A
Slot 3: x16 full-
Processor 1 Slot 6: x8 low
height, half length
Slot 1: x8 full-
Processor 1 Slot 4: x16 full-
height, full length
Slot 2: x8 full-
Processor 1 Slot 5: x8 full-
height, full length
Slot 3: x8 full-
Processor 1 Slot 6: x8 low
height, half length
Slot1: x16 full-
Processor 1 Slot 4: x16 full-
height, full length
Slot 2: x8 full-
Processor 1 Slot 5: x8 full-
height, full length
Slot 3: x8 full-
Processor 1 Slot 6: x8 low
height, half length
PCIe slots on riser
Processor
2 (Height and
connection
length)
N/A
N/A
Slot 4: x8 low
Processor 1
profile, half length
Slot 4: x16 low
Processor 2 N/A
profile, half length
Processor 2
height, full length
Slot 5: x8 full-
Processor 2
height, full length
Processor 1
profile, half length
Processor 2 Slot 7: x8 full-
height, full length
Slot 5: x8 full-
Processor 2 Slot 8: x16 full-
height, full length
Processor 1
profile, half length
Processor 2 Slot 7: x8 full-
height, full length
Processor 2 Slot 8: x16 full-
height, full length
Processor 1
profile, half length
Processor 2 Slot 7: x8 full-
height, full length
Processor 2 Slot 8: x16 full-
height, full length
Processor 1
profile, half length
Dell EMC PowerEdge R740 Installation and Service Manual
PCIe slots on
Processor
riser 3 (Height
connection
and length)
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Processor
height, full length
2
Processor
height, full length
2
Processor
height, full length
2
Processor
height, full length
2
Processor
height, full length
2
Processor
height, full length
2
Technical specifications
29
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