PCIe Slot Description

RAID controller card

CPU 1

PCIe 3.0

x8

x8

Port1C

17/02/0

1D/00/0

-

LOM

CPU 1

PCIe 3.0

x8

x8

Port1A

17/00/0

1A/00/0

-

FlexIO card

CPU 2

PCIe 3.0

x8

x8

Port2A

AE/00/0

AF/00/0

-

Slot 1

CPU 1

PCIe 3.0

x16

• 2-slot PCIe riser module (PRM): x16
• 3-slot PRM: x8

Port2A

3A/00/0

3B/00/0

FHFL

Slot 2

CPU 1

PCIe 3.0

x16

• 2-slot PRM: N/A
• 3-slot PRM: x8

Port2C

3A/02/0

3E/00/0

FHFL

Slot 3

CPU 1

PCIe 3.0

x16

x8

Port3A

5D/00/0

5E/00/0

FHHL

Slot 4

CPU 2

PCIe 3.0

x16

• 2-slot PRM: x16
• 3-slot PRM: x8

Port1A

85/00/0

86/00/0

FHFL

Slot 5

CPU 2

PCIe 3.0

x16

• 2-slot PRM: N/A
• 3-slot PRM: x8

Port1C

85/02/0

89/00/0

FHFL

Slot 6

CPU 2

PCIe 3.0

x16

x8

Port2C

AE/02/0

B0/00/0

FHHL

Slot 7

CPU 2

PCIe 3.0

x16

• Single-slot PRM: x16
• 2-slot PRM: x8

Port3A

D7/00/0

D8/00/0

HHHL

Slot 8

CPU 2

PCIe 3.0

x8

• Single-slot PRM: N/A
• 2-slot PRM: x8

Port3C

D7/02/0

DB/00/0

HHHL

• The B/D/F (Bus/Device/Function Number) values are the default values when the server is fully configured with PCIe devices. The values may vary if the server is not fully configured with PCIe devices or if a PCIe card with a PCI bridge is configured.
• Root Port (B/D/F) indicates the B/D/F of an internal PCIe root port of the processor.
• Device (B/D/F) indicates the B/D/F (displayed on the OS) of an onboard or extended PCIe device.
• The PCIe x16 slots are backward compatible with PCIe x8, PCIe x4, and PCIe x1 cards. The PCIe cards are not forward compatible. That is, the PCIe slot width cannot be smaller than the PCIe card link width.
• The full-height half-length (FHHL) PCIe slots are backward compatible with half-height half-length (HHHL) PCIe cards.
• All slots support PCIe cards of up to 75 W. The power of a PCIe card varies depending on its model.
• The SP520, SP521, and SP522 do not support driveless server configuration. PXE boot is recommended for driveless servers.