The Cisco UCS X440p connectivity to the Cisco UCS X210c and X410c compute node is enabled with the X Fabric Module. When a compute node is inserted into the chassis, the compute node's mezzanine card plugs directly into the two Fabric Module slots (with no midplane) for PCIe connectivity to the Cisco UCS X440p PCIe Node.

The Cisco UCS X-Series was engineered to be modular and flexible to offer adaptability and workload flexibility. With the introduction of PCIe Node and X-Fabric technology, X-Series now supports workloads that require GPUs. The unique architecture dramatically simplifies the addition, removal, or upgrade of GPUs to compute nodes. The Cisco UCS X440p PCIe Node allows you to add up to four GPUs to a Cisco X210c M6, X210c M7 or X410c M7 Compute Node with Cisco UCS X-Fabric Technology. Cisco UCS X-Series has no midplane; this innovative design provides fewer obstructions for better airflow. The vertically oriented X210c compute nodes and the X440p PCIe nodes connect directly to horizontally oriented X-Fabric modules. This enables seamless upgrades to future compute nodes, resource nodes, and X-Fabric modules without requiring any forklift upgrades.