Owners Manual

4 Follow the procedure listed in After working inside your system.
Expansion cards and expansion card risers
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 not supported or missing. It does not prevent your
system from turning on. However, if F1/F2 pause occurs and an error message is displayed.
Expansion card installation guidelines
The XC740xd Series system supports up to eight PCI express (PCIe) generation 3 expansion cards, that can be installed on the system
board by using expansion card risers. The following table provides detailed information about the expansion card riser specications:
Table 43. Expansion card riser specications
Riser
conguration
and supported
risers
Slot description PCIe slots on
riser 1 (Height
and length)
Processor
connection
PCIe slots on riser
2 (Height and
length)
Processor
connection
PCIe slots on
riser 3 (Height
and length)
Processor
connection
Riser
conguration 4
(1A+2A+3A)
Three x8 and
four x16 slots
Slot 1: x16 full-
height, full length
Processor 1 Slot 4: x16 full-
height, full length
Processor 2 Slot 7: x8 ful Processor
2
N/A N/A Slot 5: x8 full-
height, full length
Processor 2 Slot 8: x16 full-
height, full length
Processor
2
Slot 3: x16 full-
height, half length
Processor 1 Slot 6: x8 low
prole, half length
Processor 1
Riser
conguration 6
(1D+2A+3A)
Five x8 and
three x16 slots
Slot1: x16 full-
height, full length
Processor 1 Slot 4: x16 full-
height, full length
Processor 2 Slot 7: x8 full-
height, full length
Processor
2
Slot 2: x8 full-
height, full length
Processor 1 Slot 5: x8 full-
height, full length
Processor 2 Slot 8: x16 full-
height, full length
Processor
2
Slot 3: x8 full-
height, half length
Processor 1 Slot 6: x8 low
prole, half length
Processor 1
Table 44. Riser conguration 4 (1A+2A+3A) and Riser conguration 6 (1D+2A+3A)
Card Type Slot priority Maximum number of cards
GPU (double width) 1, 8, 4 3
PCIe Bridge 1, 4, 8 3
Internal storage adapter 6 1
Express Flash NVMe PCIe SSD adapter 7, 2, 3, 5, 1, 8, 4, 6 6
25 GB NIC 7, 2, 3, 5, 1, 8, 4 3
10 GB NIC 7, 2, 3, 5, 1, 8, 4 7
1 GB NIC 7, 2, 3, 5, 1, 8, 4 7
BOSS 3 1
NOTE: For information about slot form factor, see the Expansion card riser congurations table.
96 Installing and removing system components