The N3K-C3408-S is a product that offers high-performance and scalability for data center networks. Its key features include 48 ports of 10 Gigabit Ethernet (GbE) and 6 ports of 40 GbE, allowing for flexible connectivity options. It also supports advanced features like Virtual Extensible LAN (VXLAN) and Cisco Application Centric Infrastructure (ACI), enabling efficient network virtualization and automation. The N3K-C3408-S provides benefits such as improved network agility, simplified management, and enhanced security. Its unique selling points are its high port density, advanced feature set, and compatibility with Cisco's ecosystem of products.