Description
The Cisco C1-CISCO4321/K9 is a versatile ISR 4000 Series router designed for branch offices requiring high performance, security, and scalability. Housed in a compact 1RU form factor, it offers a modular architecture with two integrated WAN interface card (NIM) slots and one enhanced service module (SM) slot for flexible expansion. The router supports up to 50 Mbps of aggregate throughput by default, with performance-on-demand licensing options to scale up to 100 Mbps, making it ideal for growing network demands. Its fanless design and quiet operation make it suitable for office environments where noise is a concern.
This model includes two integrated Gigabit Ethernet ports, 4 GB of DRAM (upgradeable to 16 GB), and 4 GB of flash memory for reliable storage and performance. It supports Cisco IOS XE software, enabling advanced features such as application visibility, intelligent WAN (IWAN), and threat defense. The C1-CISCO4321/K9 is often bundled with Cisco ONE licensing, offering simplified software management and future-proofing for evolving IT needs. When buying used, ensure the unit includes rack-mount brackets, power supply, and any necessary licensing for optimal deployment.