NVIDIA/Mellanox SocketDirect/MultiHost Auxiliary Kit for Additional PCIe Gen6x16 Connection, 250mm MCIO Harness
Socket Direct or Multi-Host SuperNIC, which cost-effectively integrates a single SuperNIC and an auxiliary PCIe connection card and MCIO cable connecting the two. Socket Direct 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 an MCIO cable.