WS-C3900-4R-RF Cisco 4-ports Token Ring Module

The Cisco WS‑C3900‑4R‑RF Token Ring Module delivers seamless integration of legacy Token Ring networks into modern Cisco Catalyst 3900 series switches, giving you the flexibility to support existing infrastructure while you transition to newer technologies. Designed for reliability and ease of installation, this compact, hot‑swappable module ensures uninterrupted connectivity and minimizes downtime during upgrades. Its robust construction and Cisco’s proven engineering provide consistent performance, secure data transmission, and long‑term durability in demanding enterprise environments. Whether you’re expanding a campus network or maintaining critical legacy applications, this module offers a cost‑effective solution that preserves your investment and simplifies network management.