Table 39. Recommended installation priority for different types of PCIe adapters1. OCP Ethernet adapter 6. InfiniBand adapter2. Custom form factor (CFF) internal HBA/RAID adapter 7. Fiber channel adapter3. Standard form factor (SFF) RAID adapter/Re-timeradapter8. Network adapter4. SFF HBA 9. NVMe PCIe flash adapter5. GPU adapter 10. External HBA/RAID adapterWhen installing a specific PCIe adapter, refer to the following suggested slot installation priority:Table 40. Recommended slot installation priority for PCIe adaptersRecommended slotinstallation priorityPCIe adaptersMust be installed in slot 1 • SFF HBA/RAID adapter• ThinkSystem x16 Gen 4.0 Re-timer adapter (for 4x NVMe)Must be installed in slot 2(configured as a full-heightslot)• ThinkSystem NVIDIA Quadro P2200 5GB PCIe Active GPU• ThinkSystem Broadcom 57454 10/25GbE SFP28 4-port PCIe Ethernet AdapterMust be installed in slot 3 ThinkSystem Mellanox HDR/200GbE 2x PCIe Aux KitNote: ThinkSystem Mellanox HDR/200GbE 2x PCIe Aux Kit must be used togetherwith Mellanox ConnectX-6 HDR IB/200GbE Single Port x16 PCIe Adapter andfunctions as the auxiliary adapter. Two CPUs are required if both adapters are used,with the primary adapter installed in slot 1 or slot 2 while the auxiliary adapter installedin slot 3.Slot 1 > Slot 3 > Slot 2 • ThinkSystem NVIDIA Tesla T4 16GB PCIe Passive GPU• NVIDIA Tesla T4 16GB Base Card (for China only)• NVIDIA Quadro P620 GPU• Mellanox ConnectX-6 HDR100 IB/100GbE VPI 1-port x16 PCIe 3.0 HCA• Mellanox ConnectX-6 HDR100 IB/100GbE VPI 2-port x16 PCIe 3.0 HCA• Mellanox ConnectX-6 Dx 100GbE QSFP56 2-port PCIe Ethernet AdapterSlot 2 > Slot 3 A COM port upgrade kit needs to be installed in slot 2 or 3 as a normal PCIe adapter.In this case, a riser and bracket are needed.Slot 1 > Slot 2 > Slot 3 Other PCIe adapters not mentioned aboveNotes: For Mellanox ConnectX-6 HDR IB/200GbE Single Port x16 PCIe Adapter, referto the following slot priority depending on the quantity of adapters to be installed:• Two adapters: slot 1, slot 3 or slot 2, slot 3• Three adapters: slot 1, slot 2, slot 3Technical rules for GPU adaptersUnderstanding the technical rules helps you choose the correct GPUs and install them in the supported slotsbased on what is configured for your server.The following are rules for installing GPUs for your server:Chapter 4. Hardware replacement procedures 89