Cisco ISR4331/K9 - 4000 Series | 2-Ports Ethernet 1U Rack-mountable Integrated Service Router

Technical Specifications:
- Dimensions: 438.15 x 438.15 x 44.45 mm
- Weight: 7.71 kg
- RAM: 4 GB
- Flash Memory: 4 GB
- WAN Ports: 1 GE SFP, 1 GE RJ45, 1 GE Combo
- LAN Ports: 3 x 10/100/1000
- Expansion Slots: 2 NIM (Network Interface Modules), 1 ISC (Internal Services Card)
- VPN Support: IPsec, SSL VPN, DMVPN, FlexVPN
- Firewall Support: Stateful firewall, NAT, ACL, Zone-Based Firewall, IPS
- Routing Protocols: BGP, OSPF, EIGRP, RIP, IS-IS, PIM, IGMP, etc.
- Power Supply: AC or DC
- Operating Temperature: 0 to 40°C

Helpful Notes:
- The ISR4331/K9 is a highly versatile router suitable for small to medium-sized businesses.
- With its modular design, it can be easily customized to meet changing network requirements.
- Its advanced security features provide robust protection against cyber threats.