Expansion card installation guidelinesThe PowerEdge R740 system supports up to eight PCI express (PCIe) generation 3 expansion cards, that can be installed on the systemboard using expansion card risers. The following table provides detailed information about the expansion card riser specifications:Table 42. Expansion card riser specificationsRiserconfigurationand supportedrisersSlot description PCIe slots onriser 1 (Heightand length)Processorconnection PCIe slots on riser2 (Height andlength)Processorconnection PCIe slots onriser 3 (Heightand length)ProcessorconnectionRiserconfiguration 0(No riser)No PCIe slots(only rearstorage)N/A N/A N/A N/A N/A N/ARiserconfiguration 1(1B+2B)Four x8 slotsSlot 1: x8 full-height, full lengthProcessor 1Slot 4: x8 lowprofile, half length Processor 1 N/A N/ASlot 2: x8 full-height, full lengthProcessor 1Slot 3: x8 full-height, half lengthProcessor 1Riserconfiguration 2(1B+2C)Three x8 andone x16 slotsSlot 1: x8 full-height, full lengthProcessor 1Slot 4: x16 lowprofile, half length Processor 2 N/A N/ASlot 2: x8 full-height, full lengthProcessor 1Slot 3: x8 full-height, half lengthProcessor 1Riserconfiguration 3(1A+2A)Two x8 andthree x16 slotsSlot 1: x16 full-height, full lengthProcessor 1 Slot 4: x16 full-height, full lengthProcessor 2N/A N/AN/A N/A Slot 5: x8 full-height, full lengthProcessor 2Slot 3: x16 full-height, half lengthProcessor 1 Slot 6: x8 lowprofile, half lengthProcessor 1Riserconfiguration 4(1A+2A+3A)Three x8 andfour x16 slotsSlot 1: x16 full-height, full lengthProcessor 1 Slot 4: x16 full-height, full lengthProcessor 2 Slot 7: x8 full-height, full lengthProcessor2N/A N/A Slot 5: x8 full-height, full lengthProcessor 2 Slot 8: x16 full-height, full lengthProcessor2Slot 3: x16 full-height, half lengthProcessor 1 Slot 6: x8 lowprofile, half lengthProcessor 1Riserconfiguration 5(1B+2A+3A)Six x8 and twox16 slotsSlot 1: x8 full-height, full lengthProcessor 1 Slot 4: x16 full-height, full lengthProcessor 2 Slot 7: x8 full-height, full lengthProcessor2Slot 2: x8 full-height, full lengthProcessor 1 Slot 5: x8 full-height, full lengthProcessor 2 Slot 8: x16 full-height, full lengthProcessor2Slot 3: x8 full-height, half lengthProcessor 1 Slot 6: x8 lowprofile, half lengthProcessor 1Dell EMC PowerEdge R740 Installation and Service ManualInstalling and removing system components103
