Skip to main content

PCIe riser and adapter installation rules and order (server model with four PCIe risers)

Use the information in this topic to understand installation rules and order for PCIe risers and PCIe adapters in the sever with four PCIe risers.

Note
  • Performance may degrade when a x16 PCIe card is installed in a x8 lane PCIe slot.
  • The available PCIe slots will depend on the riser and number of processors installed.
    • With two processors installed: PCIe slot 4, 5, 6, 9, 12, and 14.
    • With four processors installed: PCIe slot 3 to 14.
  • PCIe slot 11 is unavailable when a serial port kit is installed.

PCIe riser installation rules and order​

Installation priorityPCIe riser typeRiser location priority
1Three-slot riser (without power connector) with serial port bayRiser C
2Three-slot riser (with power connector)Riser D
3Three-slot riser (without power connector)Riser A, riser B, riser C

PCIe adapter installation rules and order​

Installation priorityComponentPCIe slot priority
1
  1. 16i RAID adapter
  2. 16i HBA adapter
  3. 8i RAID adapter
5, 14, 11, 8, 6, 12, 9, 3
2
  1. ThinkSystem Nvidia ConnectX-7 NDR200/HDR QSFP112 2-Port PCIe Gen5 x16 InfiniBand Adapter
  2. ThinkSystem Mellanox ConnectX-6 Dx 100GbE QSFP56 2-port PCIe Ethernet Adapter
14, 6, 9, 13, 3
3
  1. 10GBase-T Ethernet Adapter
  2. ThinkSystem Mellanox ConnectX-6 Lx 10/25GbE SFP28 2-Port PCIe Ethernet Adapter
  3. RJ45 Ethernet Adapter
  4. PCIe Fibre Channel Adapter
5, 14, 6, 9, 4, 12, 10, 13, 11, 7, 3, 8
Note
The following PCIe adapters are not supported in slot 9:
  • ThinkSystem Broadcom 5719 1GbE RJ45 4-Port PCIe Ethernet Adapter
  • ThinkSystem Intel E610-T4 10GBASE-T 4-port PCIe Ethernet Adapter
4External HBA adapter5, 14, 4, 10, 13, 11, 7, 8
5OCP module1, 2