Five-slot secondary riser board components

Item	Slot number	Description	Supported options
1	6	PCIe3 x16 (16, 8, 4, 1)	NVIDIA Single-width T4 GPU accelerator ¹ NVIDIA Single-width RTX4000 GPU accelerator ¹
2	4	PCIe3 x16 (16, 8, 4, 1)	NVIDIA Single-width T4 GPU accelerator ¹ NVIDIA Single-width RTX4000 GPU accelerator ¹
3	—	Storage controller backup power connector	—
4	—	GPU power cable connector	—
5	2	PCIe3 x16 (16, 8, 4, 1)	Smart Array type-p controller Ethernet adapter Infiniband adapter
6	3	PCIe3 x16 (16, 8, 4, 1)	Infiniband adapter NVIDIA Single-width T4 GPU accelerator ¹ NVIDIA Single-width RTX4000 GPU accelerator ¹ PCIe workload accelerator
7	5	PCIe3 x16 (16, 8, 4, 1)²	Infiniband adapter NVIDIA Single-width T4 GPU accelerator ¹ NVIDIA Single-width RTX4000 GPU accelerator ¹ PCIe workload accelerator

The mixing of different GPU accelerator models in the same riser is not supported.

PCIe3 x16 cards can be installed in the slot 5, but the performance will be limited to PCIe3 x8 throughput.