Dell EMC PowerEdge R940 Installation And Service Manual page 116

Table 41. Expansion card riser configurations
Riser PCIe slot on the
expansion card riser
Slot 8
Riser 2 (IO_RISER2) Slot 9
Slot 10
Slot 11
Riser 3 (IO_RISER3) Slot 12
Slot 13
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.
Table 42. Expansion card installation order — Two processor configuration
Card Type
Internal storage adapter
PERC H330
PCIe extender card
PCIe card (Mellanox)
100 GB NIC (Mellanox)
100 G OPA (Intel)
External adapter (12 Gbps HBA, H840,
H830)
NVMe PCIe storage (Samsung)
40 GB (x8) NIC (Intel)
40 GB (x8) NIC (Mellanox)
FC32 HBA (Emulex and QLogic)
FC32 HBA x8 (Emulex and QLogic)
25 GB NIC (Broadcom)
25 GB NIC (Mellanox)
25 GB NIC x8 (QLogic)
FC16 HBA (Emulex and QLogic)
10 GB NIC (SolarFlare)
FC 8 HBA (Emulex and QLogic)
1 GB NIC (Broadcom and Intel)
10 GB NIC SFP, SFP+ (QLogic)
116 Installing and removing system components
Processor PCIe slots on riser
connection (Height)
Processor 3 full height
Processor 3 full height
Processor 3 full height
Processor 4 full height
Processor 4 full height
Processor 4 full height
Slot priority
1, 6
1
7, 4, 2
4, 3, 2, 7
4, 3, 2, 7
2, 3, 4, 7
5, 1, 6, 2, 4, 3, 7
5, 1, 6, 2, 4, 3, 7
5, 1, 6, 2, 4, 3, 7
4, 3, 2, 7, 5, 1, 6
5, 1, 6, 2, 4, 3, 7
5, 1, 6, 2, 4, 3, 7
5, 1, 6, 2, 4, 3, 7
4, 3, 2, 7, 5, 1, 6
5, 1, 6, 2, 4, 3, 7
5, 1, 6, 2, 4, 3, 7
5, 1, 6, 2, 4, 3, 7
5, 1, 6, 2, 4, 3, 7
5, 1, 6, 2, 4, 3
5, 1, 6, 2, 4, 3, 7
PCIe slots Link width
on riser
(length)
3/4 length x16
half length x16
half length x16
3/4 length x16
half length x16
half length x16
Maximum number of cards
2
1
3
3
3
4
2
7
7
7
7
7
7
7
7
7
7
7
6
7
Slot width
x16
x16
x16
x16
x16
x16