The Cisco SM-ES3G-16-P EtherSwitch Service Module is a 16-port Layer 2/3 LAN service module designed for Cisco Integrated Services Routers (ISR), delivering integrated switching and PoE+ power within the router chassis. It provides 16 Gigabit Ethernet ports that auto-negotiate at 10/100/1000 Mbps and supports PoE/PoE+ on compatible devices, enabling power delivery to IP phones, cameras, and wireless access points in enterprise branch and campus networks. The module mounts in an internal router service slot and integrates with Cisco IOS for centralized management, with Manufacturer Part Number SM-ES3G-16-P and Alternate Part Number SMES3G16P.
