
Dell PowerEdge R940 Installation and Service Manual
Expansion card installation guidelines
Depending on your system configuration, the following PCI Express (PCIe) generation 3 expansion cards are supported:
| Riser | PCIe slot on the expansion card riser | Processor connection | PCIe slots on riser (Height) | PCIe slots on riser (length) | Link width | Slot width |
|---|---|---|---|---|---|---|
| Riser 2 (IO_RISER2) | Slot 8 | Processor 3 | full height | 3/4 length | x16 | x16 |
| Slot 9 | Processor 3 | full height | half length | x16 | x16 | |
| Slot 10 | Processor 3 | full height | half length | x16 | x16 | |
| Riser 3 (IO_RISER3) | Slot 11 | Processor 4 | full height | 3/4 length | x16 | x16 |
| Slot 12 | Processor 4 | full height | half length | x16 | x16 | |
| Slot 13 | Processor 4 | full height | half length | x16 | 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.
| Card type | Slot priority | Maximum number of cards |
|---|---|---|
| PERC 10, H740P Internal Storage adapter | 1,6 | 2 |
| PERC 9, H730P Internal Storage adapter | 1,6 | 2 |
| PERC H330 Internal Storage adapter | 1 | 1 |
| PCIe extender card | 4, 7, 2 | 3 |
| PCIe HCA : EDR card(Mellanox) | 4, 3, 2, 7 | 3 |
| 100 Gb NIC (Mellanox) | 4, 3, 2, 7 | 3 |
| 100 Gb OPA (Intel) | 2, 4, 3, 7 | 4 |
| External adapter (12 Gbps HBA, H840, H830) | 5, 1, 6, 2, 4, 3, 7 | 2 |
| NVMe PCIe storage PM17 Series (Samsung/Dell/Intel) | 5, 4, 3, 7, 2, 6, 1 | 7 |
| NVMe PCIe storage P4800X (Dell/Intel) | 5, 4, 3, 2, 6, 1 | 6 |
| 40 Gb (x8) NIC (Intel/Mellanox) | 5, 1, 6, 2, 4, 3, 7 | 7 |
| FC32 HBA (Emulex/QLogic) | 5, 1, 6, 2, 4, 3, 7 | 7 |
| 25 Gb NIC x8 (Intel/Broadcom/Mellanox/Qlogic) | 5, 1, 6, 2, 4, 3, 7 | 7 |
| 25 Gb NIC x16 (Mellanox) | 4, 3, 2, 7 | 3 |
| FC16 HBA (Emulex/QLogic) | 5, 1, 6, 2, 4, 3, 7 | 7 |
| 10 Gb NIC Base-T Quad Port ( Intel) | 4, 3, 5, 2 | 4 |
| 10 Gb NIC Dual Port - 57412 (Broadcom) | 5, 1, 6, 2, 4, 3, 7 | 7 |
| 10 Gb NIC Dual Port - 57416 (Broadcom) | 5, 1, 6, 2, 4, 3 | 6 |
| 10 Gb NIC SFP+( Intel) | 5, 1, 6, 2, 4, 3, 7 | 7 |
| 10 Gb NIC SFP+ (Mellanox) | 4, 3, 2, 7, 5, 1, 6 | 7 |
| 10 Gb NIC BT, DP (QLogic) | 5, 1, 6, 2, 4, 3 | 6 |
| 10 Gb NIC SFP, DP (QLogic) | 5, 1, 6, 2, 4, 3, 7 | 7 |
| 10 Gb NIC SFP+, DP (QLogic) | 5, 1, 6, 2, 4, 3, 7 | 7 |
| 10 Gb NIC BT QP (QLogic) | 2, 4, 3, 7 | 4 |
| 10 Gb NIC SFP QP (QLogic) | 5, 1, 6, 2, 4, 3, 7 | 7 |
| 10 GB NIC SF852P/SF852X DP (SolarFlare) | 5, 1, 6, 2, 4, 3, 7 | 7 |
| 10 Gb NIC Base-T Dual Port ( Intel) | 5, 1, 6, 2, 4, 3 | 6 |
| FC 8 HBA (Emulex and QLogic) | 5, 1, 6, 2, 4, 3, 7 | 7 |
| 1 GB NIC (Broadcom and Intel) | 5, 1, 6, 2, 4, 3 | 6 |
| BOSS adapter - Internal Storage | 5, 1, 6, 2, 4, 3 | 1 |
| Card type | Slot priority | Maximum number of cards |
|---|---|---|
| PERC 10, H740P Internal Storage adapter | 1,6 | 2 |
| PERC 9, H730P Internal Storage adapter | 1,6 | 2 |
| PERC H330 Internal Storage adapter | 1 | 1 |
| PCIe extender card | 11,12,8 | 3 |
| PCIe HCA : EDR CX5 card(Mellanox) | 11, 8, 3, 4, 12, 9, 2, 10, 13, 7 | 4 |
| PCIe HCA : EDR CX4 card(Mellanox) | 11, 8, 3, 4, 12, 9, 2, 10, 13, 7 | 8 |
| 100 Gb NIC (Mellanox) | 11, 8, 3, 4, 12, 9, 2, 10, 13, 7 | 8 |
| HCA H100 Card (Mellanox) | 11, 8, 3, 4, 12, 9, 2, 10, 13, 7 | 4 |
| 100 Gb OPA (Intel) | 2, 4, 8, 11, 3, 7, 9, 12, 10, 13 | 4 |
| External adapter (12 Gbps HBA, H840, H830) | 5, 1, 6, 8, 11, 2, 4, 9, 12, 3, 7, 10, 13 | 2 |
| NVMe PCIe storage PM17 Series (Samsung/Dell/Intel) | 5, 8, 11, 4, 9, 12, 3, 7, 10, 13 | 10 |
| NVMe PCIe storage P4800X (Dell/Intel) | 5, 8, 11, 4, 9, 12, 3, 10, 13 | 9 |
| NVMe PCIe Storage P4500/P4600 | 5, 8, 11, 4, 9, 12, 3, 7, 10, 13 | 10 |
| 40 Gb (x8) NIC (Intel) | 5, 1, 6, 8, 11, 2, 4, 9, 12, 3, 7, 10, 13 | 13 |
| 40 Gb (x8) NIC (Mellanox) | 11, 8, 3, 4, 12, 9, 2, 10, 13, 7, 6, 1, 5 | 8 |
| FC32 HBA (Emulex/QLogic) | 5, 1, 6, 8, 11, 2, 4, 9, 12, 3, 7, 10, 13 | 13 |
| 25 Gb NIC x8 (Intel/Broadcom/Mellanox/Qlogic) | 5, 1, 6, 8, 11, 2, 4, 9, 12, 3, 7, 10, 13 | 13 |
| 25 Gb NIC x16 (Mellanox) | 11, 8, 3, 4, 12, 9, 2, 10, 13, 7 | 8 |
| FC16 HBA (Emulex/QLogic) | 5, 1, 6, 8, 11, 2, 4, 9, 12, 3, 7, 10, 13 | 13 |
| 10 Gb NIC Base-T Quad Port ( Intel) | 11, 10, 2, 4 | 4 |
| 10 Gb NIC Dual Port - 57412 (Broadcom) | 5, 1, 6, 8, 11, 2, 4, 9, 12, 3, 7, 10, 13 | 13 |
| 10 Gb NIC Dual Port - 57416 (Broadcom) | 5, 1, 6, 11, 2, 4, 9, 12, 3, 10, 13 | 11 |
| 10 Gb NIC SFP+( Intel) | 5, 1, 6, 8, 11, 2, 4, 9, 12, 3, 7, 10, 13 | 13 |
| 10 Gb NIC SFP+ (Mellanox) | 11, 8, 3, 4, 12, 9, 2, 10, 13, 7, 6, 1, 5 | 8 |
| 10 Gb NIC BT, DP (QLogic) | 5, 1, 6, 11, 2, 4, 9, 12, 3, 10, 13 | 11 |
| 10 Gb NIC SFP, DP (QLogic) | 5, 1, 6, 8, 11, 2, 4, 9, 12, 3, 7, 10, 13 | 13 |
| 10 Gb NIC SFP+, DP (QLogic) | 5, 1, 6, 8, 11, 2, 4, 9, 12, 3, 7, 10, 13 | 13 |
| 10 Gb NIC BT QP (QLogic) | 8, 11, 2, 4, 3, 7 | 6 |
| 10 Gb NIC SFP QP (QLogic) | 5, 1, 6, 8, 11, 2, 4, 9, 12, 3, 7, 10, 13 | 13 |
| 10 GB NIC SF852P/SF852X DP (SolarFlare) | 5, 1, 6, 8, 11, 2, 4, 9, 12, 3, 7, 10, 13 | 13 |
| 10 Gb NIC Base-T Dual Port ( Intel) | 5, 1, 6, 11, 2, 4, 9, 12, 3, 10, 13 | 11 |
| FC 8 HBA (Emulex and QLogic) | 5, 1, 6, 8, 11, 2, 4, 9, 12, 3, 7, 10, 13 | 13 |
| 1 GB NIC (Broadcom and Intel) | 5, 1, 6, 11, 2, 4, 9, 12, 3, 10, 13 | 11 |
| BOSS adapter - Internal Storage | 5, 1, 6, 11, 2, 4, 9, 12, 3, 10, 13 | 1 |
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