Cisco IEM-3000-4SM 4-Port SFP Expansion Module

The Cisco IEM-3000-4SM is a compact expansion module designed for the Cisco Industrial Ethernet 3000 (IE 3000) Series switches, providing four additional 100 Mbps Small Form-Factor Pluggable (SFP) ports for fiber optic connectivity. This module enhances network flexibility in harsh industrial environments, such as manufacturing plants, utilities, and transportation systems, where reliable, high-speed data transmission is critical. Key features include support for multimode and single-mode fiber, enabling extended reach and immunity to electromagnetic interference compared to copper-based connections. Advantages over similar products include seamless integration with Cisco's rugged IE 3000 switches, robust construction for extreme temperatures and vibrations, and easy hot-swappable installation without disrupting operations. Benefits include improved network scalability, reduced downtime, and enhanced security through Cisco's IOS software. Drawbacks may include higher cost for fiber optics and the need for compatible SFP transceivers (sold separately). Overall, it's ideal for applications requiring long-distance, noise-resistant links, offering superior performance in industrial settings over basic Ethernet modules. Condition analysis from images indicates used but well-maintained status, with no visible damage; includes faceplate details like Model IEM-3000-4SM, PID/VID, and IOS version. Estimated market price for used units ranges from $150-300 USD based on recent sales data from sites like eBay and industrial surplus vendors.