Cisco WAN Network Interface Module - Seriell adapter - RS-232/449/530/V.35/X.21 x 2 - oppusset - for P/N: ISR4321-PM20, ISR4331-PM20, ISR4351-PM20, ISR4431-PM20, ISR4461-K9-CAP, ISR4461-PM20

• Plug-in module form factor for easy installation
• Wired connectivity for reliable network performance
• Designed for seamless integration with PCs

Cisco Gigabit Ethernet WAN Modules bring high-density Ethernet connectivity to the Cisco 4000 Series Integrated Services Routers (ISRs). Providing maximum flexibility, the modules accelerate applications such as Ethernet WAN access, inter-VLAN routing, and high-speed connectivity to LAN switches and servers.