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PCIe slots and adapters

Understanding the technical rules for PCIe adapters helps you correctly install and configure PCIe adapters in the system.

Table 1. PCIe adapters supported and locations
Server rear viewSupported types and slot location


Riser 1 assembly

  • Slot 1: PCIe x8, Gen 4, full-height, half-length

  • Slot 2: PCIe x16, Gen 4, full-height, half-length

Riser 2 assembly

  • Slot 3: PCIe x16, Gen 4, half-height, half-length

PCIe adapterInstallation priorityMaximum supportedSlot supported
OCP module
ThinkSystem Broadcom 2X25G BCM957414N4140C-N225p SFP28 OCP3.0 v18 NICOCP slot1OCP slot
ThinkSystem Intel E810-XXVDA2 25GbE SFP28 2-port OCP 3.0 Ethernet Adapter
ThinkSystem Intel E810-CQDA2 OCP3.0 Ethernet Network Adapter
ThinkSystem Mellanox MCX623436AN-CDAB OCP3.0 2x100G QSFP56 NIC
ThinkSystem Broadcom 2X100G BCM957508-N2100G QSFP28 OCP3.0 NIC
NIC adapters
ThinkSystem Broadcom 2P 25Gbe PCIe RDMA BCM957414A4142CC NIC212
ThinkSystem Emulex LPe35002 32Gb 2-port PCIe Fibre Channel Adapter
RAID adapter and HBA
ThinkSystem Broadcom 9600-24i 05-50111-01 SFF8654 SAS HBA RAID111
ThinkSystem Broadcom 9670-24i 05-50123-00 Tri RAID

To locate the PCIe slots, see Rear view.