The Cisco UCSC-PCIE-ID40GF is a network interface card (NIC) that utilizes the Intel XL710-QDA2 chipset. It's a dual-port 40 Gigabit Ethernet QSFP+ adapter designed for high-performance networking in servers. Here's a breakdown of its key features and specifications: Key Features: Dual Ports: Offers two QSFP+ ports, each capable of 40 Gbps Ethernet connectivity. Intel XL710-QDA2 Controller: Provides high performance and advanced features. PCI Express 3.0 x8 Interface: Ensures sufficient bandwidth for the 40 Gbps ports. QSFP+ Connectors: Uses Quad Small Form-factor Pluggable Plus connectors for high-density and high-speed connections. Virtualization Features: Supports technologies like Intel Virtualization Technology for Connectivity (VT-c), including Virtual Machine Device Queues (VMDq) and Single Root I/O Virtualization (SR-IOV), enhancing performance in virtualized environments. Intelligent Offloads: Includes features like Intel Ethernet Flow Director for traffic steering and load balancing, reducing CPU utilization. RDMA Support: Some listings mention RDMA (Remote Direct Memory Access) support, which can be beneficial for low-latency, high-throughput applications. Form Factor: Full Height bracket - as pictured Warranty: 60day