The Cisco Catalyst 3550-24 PWR inline power switch is a stackable, multilayer, 24-port 10/100 switch with 2 Gigabit Interface Converter (GBIC)-based Gigabit Ethernet ports ideal for integrated voice, video, and data applications. With integrated inline power, customers can power Cisco IP phones and Cisco Aironet wireless LAN access points directly from the switch and lower the total cost of ownership (TCO) by: centralizing power provisioning, easing deployment by eliminating the need for wall power to each device, eliminating the need for additional, separate wiring to power devices.The Catalyst 3550-24 PWR switch possesses all of the advanced Layer 2-4 intelligent services available in the Catalyst 3550 Series. Customers can deploy high-performance IP routing, advanced quality of service (QoS), granular rate-limiting, enhanced network security, and multicast management network-wide - while maintaining the simplicity of traditional LAN switching. Additionally, up to 15.4W/port of inline power on every 10/100 port ensures maximum device support for IP telephony and wireless LAN deployments.Maximum power availability for a converged voice and data network is attainable when the Catalyst 3550-24 PWR switch is combined with the Cisco Redundant Power System 675 (RPS 675) (available 1HCY03) for seamless protection against internal power supply failures and an uninterruptible power supply (UPS) system to safeguard against power outages.The Catalyst 3550-24 PWR is available with either the Standard Multilayer Software Image (SMI) or the Enhanced Multilayer Software Image (EMI). The EMI provides a richer set of enterprise-class services including advanced hardware-based IP unicast and multicast routing and the Web Cache Communication Protocol (WCCP).This Catalyst 3550-24 PWR is installed with the Enhanced Multilayer Software Image (EMI).