Expansion card installation guidelines
Depending on your system configuration, the following PCI Express (PCIe) generation 3 expansion cards are supported:
Table 42. Expansion card riser configurations
Expansion card riser
PCIe slots on the riser
Processor connection Height
Length
Slot width
Riser 1A
Slot 1
Processor 1
Low Profile
Half Length
x16
Slot 2
Processor 1
Low Profile
Half Length
x16
Riser 2A
Slot 3
Processor 2
Low Profile
Half Length
x16
Riser 1B
Slot 1
Processor 1
Low Profile
Half Length
x16
Riser 2B
Slot 2
Processor 2
Full Height
Three-fourth Length
x16
Riser 1B
Slot 1
Processor 1
Low Profile
Half Length
x16
NOTE:
The expansion card slots are not hot-swappable.
The following table provides guidelines for installing expansion cards to ensure proper cooling and mechanical fit. The expansion cards with
the highest priority should be installed first using the slot priority indicated. All the other expansion cards should be installed in the card
priority and slot priority order.
Table 43. Riser configurations: 1B
Card Type
Slot Priority
Form Factor
HWRAID BOSS (ODM)
1
Low Profile
NVMe PCIe SSD (Dell design)
1
Low Profile
Infiniband HCA EDR (Mellanox)
1
Low Profile
100G NICs (Mellanox)
1
Low Profile
Omni-Path HFI (Intel)
1
Low Profile
Infiniband HCA FDR (Mellanox)
1
Low Profile
40G NICs (Intel)
1
Low Profile
40G NICs (Mellanox)
1
Low Profile
FC32 HBA (QLogic)
1
Low Profile
FC32 HBA (Emulex)
1
Low Profile
25G NICs (Broadcom)
1
Low Profile
25G NICs (Mellanox)
1
Low Profile
25G NICs (QLogic)
1
Low Profile
FC16 HBA (QLogic)
1
Low Profile
FC16 HBA (Emulex)
1
Low Profile
10Gb NICs (Broadcom)
1
Low Profile
10Gb NICs (Intel)
1
Low Profile
10Gb NICs (Mellanox)
1
Low Profile
Dell EMC PowerEdge R640 Installation and Service Manual
Installing and removing system components
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