Related tasks
Before working inside your system
After working inside your system
Expansion cards and expansion card riser
An expansion card in the system is an add-on card that can be inserted into an expansion slot on the system board or riser card
to add enhanced functionality to the system through the expansion bus.
NOTE: A System Event Log (SEL) event is logged if an expansion card riser is unsupported or missing. It does not prevent
your system from turning on and no BIOS POST message or F1/F2 pause is displayed.
Expansion card installation guidelines
Your system supports PCI Express Generation 3 expansion cards.
Table 36. Guidelines for systems supporting three PCIe expansion cards
Riser PCIe Slot Processor Connection Height Length Link Width Slot Width
1 1 Processor 2 Low Profile Half Length x16 x16
1 2 Processor 2 Low Profile Half Length x8 x16
3 3 Processor 1 Low Profile Half Length x16 x16
NOTE: Both the processors must be installed to use riser 1 slots.
Table 37. Guidelines for systems supporting two PCIe expansion cards
Riser PCIe Slot Processor Connection Height Length Link Width Slot Width
2 1 Processor 1 Low Profile Half Length x8 x16
Processor 2 Low Profile Half Length x16 x16
3 2 Processor 1 Full height Three-fourth
Length
x16 x16
NOTE: Only a three-fourth length card is supported for the PCIe expansion card slot (slot 2) on riser 3 when no mini-PERC
card is installed. Supported length with mini-PERC card installed is half length.
NOTE: For a system with three PCIe cards, only MiniSAS HD third-party cards are supported in slot 3. For a system with
two PCIe cards, only MiniSAS HD third-party cards are supported in slot 1.
NOTE: You can install expansion cards only on one slot on riser 2.
NOTE: Both the processors must be installed to use the x16 PCIe link on the riser 2 slot.
The following table provides a guide for installing expansion cards to ensure proper cooling and mechanical fit. Install the
expansion card by following the card priority and slot priority order as shown in the table.
Table 38. Expansion card installation priority
Card Priority Card Type Systems Supporting up to 2 PCIe
Expansion Cards
Systems Supporting up to 3 PCIe
Expansion Cards
Slot Priority Max Allowed Slot Priority Max Allowed
1 PCIe Bridge N/A N/A 1 1
2 RAID 1 1 3, 1 2
3 100 G HCA/OPA HFI 1 1 3, 2 (3, 1 for CX4/
OPA)
2
Installing and removing system components 97
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