The IBM 9117-5639 is a network interface card designed to provide high-density and low-latency network connectivity for IBM servers. This quad-port Integrated Virtual Ethernet (IVE) or High Efficiency Ethernet (HEA) adapter utilizes four RJ-45 connectors to deliver Gigabit Ethernet speeds over copper wiring. It is specifically engineered to support virtualization environments, offering advanced features that enable efficient network traffic management, bandwidth allocation, and virtual machine mobility. The adapter's architecture is optimized to reduce CPU overhead, thereby enhancing server performance and allowing for greater scalability of networked applications. The IBM 9117-5639 is an ideal solution for organizations looking to maximize their network infrastructure, supporting a wide range of applications from virtualized environments and cloud computing to high-performance computing (HPC) and database operations.