CISCO EHWIC-4ESG= Four port 10/100/1000 Ethernet switch interface card
Cisco EHWIC 4- and 8-port Gigabit Ethernet Interface Modules are designed for use with Cisco 3900, 2900, and 1900 series routers.
The integration of these switches with Cisco IOS Software gives network administrators the ability to manage a single device using Cisco utilities or the router command line (CLI). This approach simplifies the network structure, reduces maintenance costs and staff training, as well as simplifies the use of software and ensures consistent work of employees in branch offices. In addition, these high-density interface modules support Cisco's innovative Cisco EnergyWise technology.