Dell EMC XC Core XC450 Installation and Service Manual

Expansion card installation guidelines

Figure 1. Expansion card slot connectors
This image shows the expansion card slot connectors for R450 system.
  1. Riser 2C (Slot 3)
  2. Riser 1 (Slot 1)
The following table describes the expansion card riser configurations:
Table 1. Expansion card riser configurationsThe following table describes the expansion card riser configurations.
Configurations Expansion card risers PCIe Slots Controlling processor Height Length Slot width
Config0. with 1x LP R1 1 Processor 1 Low Profile Half length x16
Config1. with 2x LP R1 1 Processor 1 Low Profile Half length x16
R2c 3 Processor 2 Low Profile Half length x16
Config2. with 1x LP R1 1 Processor 1 Low Profile Half length x16
Config5. with 0x LP NA NA NA NA NA NA
Figure 2. Riser 1
This image shows the Riser 1A.
Figure 3. Riser 2c
This image shows the Riser 1A.
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 2. Configuration 0: R1Configuration 0: R1
Card type Slot priority Maximum number of cards
Dell Serial port module (LP) 1 1
Intel (NIC: 100 Gb) 1 1
Broadcom (NIC: 25 Gb) 1 1
Intel (NIC: 25 Gb) 1 1
Mellanox (NIC: 25 Gb) 1 1
Broadcom (NIC: 10 Gb) 1 1
Intel (NIC: 10 Gb) 1 1
Broadcom (OCP: 25 Gb) Integrated slot 1
Intel (OCP: 25 Gb) Integrated slot 1
Mellanox (OCP: 25 Gb) Integrated slot 1
Broadcom (OCP: 10 Gb) Integrated slot 1
Intel (OCP: 10 Gb) Integrated slot 1
Dell BOSS S1 Module Integrated slot 1
Table 3. Configuration 1: R1+R2cConfiguration 1: R1+R2c
Card type Slot priority Maximum number of cards
Intel (NIC: 100 Gb) 3, 1 2
Broadcom (NIC: 25 Gb) 3, 1 2
Intel (NIC: 25 Gb) 3, 1 2
Mellanox (NIC: 25 Gb) 3, 1 2
Broadcom (NIC: 10 Gb) 3, 1 2
Intel (NIC: 10 Gb) 3, 1 2
Broadcom (OCP: 25 Gb) Integrated slot 1
Intel (OCP: 25 Gb) Integrated slot 1
Mellanox (OCP: 25 Gb) Integrated slot 1
Broadcom (OCP: 10 Gb) Integrated slot 1
Intel (OCP: 10 Gb) Integrated slot 1
Dell BOSS S1 Module Integrated slot 1
Table 4. Configuration 2: R1Configuration 2: R1
Card type Slot priority Maximum number of cards
Dell Serial port module (LP) 1 1
Intel (NIC: 100 Gb) 1 1
Broadcom (NIC: 25 Gb) 1 1
Intel (NIC: 25 Gb) 1 1
Mellanox (NIC: 25 Gb) 1 1
Broadcom (NIC: 10 Gb) 1 1
Intel (NIC: 10 Gb) 1 1
Broadcom (OCP: 25 Gb) Integrated slot 1
Intel (OCP: 25 Gb) Integrated slot 1
Mellanox (OCP: 25 Gb) Integrated slot 1
Broadcom (OCP: 10 Gb) Integrated slot 1
Intel (OCP: 10 Gb) Integrated slot 1
Dell BOSS S1 Module Integrated slot 1
Table 5. Configuration 5: No RiserConfiguration 5: No Riser
Card type Slot priority Maximum number of cards
Broadcom (OCP: 25 Gb) Integrated slot 1
Intel (OCP: 25 Gb) Integrated slot 1
Mellanox (OCP: 25 Gb) Integrated slot 1
Broadcom (OCP: 10 Gb) Integrated slot 1
Intel (OCP: 10 Gb) Integrated slot 1
Dell BOSS S1 Module Integrated slot 1

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