Expansion cards and expansion card riserAn expansion card in the computer is an add-on card that can be inserted into an expansion slot on thecomputer system board or riser card to add enhanced functionality to the system through the expansionbus.NOTE: A System Event Log (SEL) event is logged if an expansion card riser is unsupported ormissing. It does not prevent your system from turning on and no BIOS POST message or F1/F2pause is displayed.Expansion card installation guidelinesYour system supports PCI Express Generation 3 expansion cards.Table 41. Guidelines for systems supporting three PCIe expansion cardsRiser PCIe Slot ProcessorConnection Height Length LinkWidth Slot Width1 1 Processor 2 Low Profile Half Length x16 x161 2 Processor 2 Low Profile Half Length x8 x163 3 Processor 1 Low Profile Half Length x16 x16NOTE: Both the processors must be installed to use riser 1 slots.Table 42. Guidelines for systems supporting two PCIe expansion cardsRiser PCIe Slot ProcessorConnection Height Length LinkWidth Slot Width2 1 Processor 1 Low Profile Half Length x8 x16Processor 2 Low Profile Half Length x16 x163 2 Processor 1 Full height Three-fourthLengthx16 x16NOTE: Only a three-fourth length card is supported for the PCIe expansion card slot (slot 2) on riser3 when no mini-PERC card is installed. Supported length with mini-PERC card installed is halflength.NOTE: For a system with three PCIe cards, only MiniSAS HD third-party cards are supported in slot3. 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 andmechanical fit. Install the expansion card by following the card priority and slot priority order as shown inthe table.114
