Cisco WS-U5535-FEFX-SM Dual Port 100Base-FX SMF Uplink Module

Overview
The Cisco WS-U5535-FEFX-SM is a dual port 100Base-FX single mode fiber uplink module designed for high-density switching platforms. It provides reliable, low-latency connectivity over long distances, making it ideal for campus, data center and metro Ethernet deployments. This compact, hot-swappable module enables you to extend your network with fiber without sacrificing performance or flexibility.

Key Features

• Two independent 100Base-FX ports for simultaneous fiber links
• Supports single mode fiber (SMF) with LC connectors
• Hot-pluggable design for zero-downtime upgrades
• Low power consumption for efficient operation
• Built-in diagnostics and LED status indicators
• Compatible with Cisco Catalyst and Nexus series switches

Technical Specifications

• Port type: 100Base-FX SMF
• Connector type: LC duplex
• Wavelength: 1310 nm
• Maximum link length: up to 10 km on standard SMF
• Data rate: 100 Mbps per port
• Power draw: typical 2.5 W per module
• Operating temperature: 0 to 40 degrees Celsius
• Dimensions: 1.0 in (height) x 1.75 in (width) x 0.5 in (depth)
• Compliance: RoHS, FCC Part 15 Class B

Applications
The WS-U5535-FEFX-SM module is suited for a wide range of networking scenarios, including:

• Campus backbone connections where long fiber runs are required
• Data center inter-switch links that need high reliability and low latency
• Metro Ethernet deployments linking remote sites over single mode fiber
• Industrial or outdoor installations that demand rugged, hot-swappable components
• Any environment that benefits from scalable, fiber-based uplink capacity without extensive cabling changes

By integrating the Cisco WS-U5535-FEFX-SM into your switching infrastructure, you gain a flexible, future-proof solution that supports growing bandwidth demands while maintaining the simplicity and manageability of Cisco's unified network architecture.