The Cisco CSS 11500 Series Content Services Switch is a compact modular platform, delivering the richest Layer 4-7 traffic management services for e-business applications. The Cisco CSS 11500 with the award-winning Cisco Web Network Services (WebNS) is specifically designed to provide robust transport and application (Layer 4-7) services for Internet and intranet data centers. The Cisco CSS 11500 Series Content Services Switch enables businesses to simultaneously reduce costs by optimizing data center resources and boost productivity by offering a superior online experience for customers, business partners, and employees. Through fast switching and forwarding of content, the Cisco CSS 11500 Series switches improve utilization, responsiveness, availability, scalability, and security of Web sites, server farms, cache clusters, and firewall systems.The CSS11506-2AC 11506 Content Services Switch includes SCM with 2 Gigabit Ethernet ports, a hard disk, 2 switch modules, 2 AC power supplies, and a fan (requires SFP GBICs).