PCIe Auxiliary Card Kit

Down Stream Port (DSP)

The self-hosted BlueField-3 DPU controllers with downstream port extension option integrate a single network adapter silicon on a primary board, and an auxiliary PCIe connection card and Cabline SA-II Plus Harness connecting the two. Utilizing the Down Stream Port (DSP) extension option, where the PCIe extension card is connected to the BlueField-3 DPU, used as a root complex for storage devices.

This enables direct access from each CPU to the network through its dedicated PCIe interface as the card's 32-lane PCIe bus is split into two 16-lane buses, with one bus accessible through a PCIe x16 edge connector and the other bus through an x16 Auxiliary PCIe Connection card. The two cards should be installed into two PCIe x16 slots and connected using two Cabline SA-II Plus harnesses.

The PCIe auxiliary kit can be purchased separately to allow downstream port extension. The table below lists the available PCIe auxiliary kit ordering part numbers, depending on the desired length of the Cabline SA-II Plus harnesses and the PCI Express interface, Gen 4.0 or Gen 5.0.