Cisco ES2 Enhanced EtherSwitch Service Module • Entry-level, lower-cost solution • Layer 2 switching in hardware • Full feature parity with the Cisco Catalyst 2960 LAN Base image • Cisco EnergyWise • Power over Ethernet; up to 1014 watts per chassis on Cisco 3900 Series router • IEEE 802.3af PoE support, up to 15.4 watts per port • Cisco pre-standard PoE Product Specifications Model Fast Ethernet Ports Gigabit Ethernet Ports Small Form-Factor Pluggable (SFP) Uplinks Layer 2 Switching Layer 2/3 Switching PoE Service Module Width SM-D-ES3G-48-P 48 2 X X Double SM-D-ES3-48-P 48 2 X X Double SM-D-ES2-48 48 2 X Double SM-ES3G-24-P 24 X X Single SM-ES3-24-P 23 1 X X Single SM-ES2-24-P 23 1 X X Single SM-ES2-24 23 1 X Single SM-ES3G-16-P 16 X X Single SM-ES3-16-P 15 1 X X Single SM-ES2-16-P 15 1 X X Single