Bridging Converter Microsense MS400240 1x10/100/1000Base-T to 1x1000Base-SX

The Microsense MS400240 bridging converter provides a single-port solution to convert copper Ethernet (1x10/100/1000Base-T) to multimode fiber 1000Base-SX (1x1000Base-SX). The device offers one RJ45 copper port that supports 10/100/1000 Mbps and one SC fiber port for 1000Base-SX, enabling transparent media conversion between twisted-pair copper and fiber-optic multimode links. The converter is designed to extend Ethernet segments over fiber, connect legacy copper devices to fiber infrastructure, and create a Gigabit fiber uplink for switches or network equipment in campus and enterprise environments.

Advantages

The Microsense MS400240 simplifies network topology by providing direct copper-to-fiber conversion in a compact unit without requiring managed switch ports or additional configuration. It supports full compatibility between 10/100/1000Base-T copper devices and 1000Base-SX multimode fiber links, preserving link speed and autonegotiation on the copper side while delivering a Gigabit fiber uplink. The single-port design reduces cabling complexity when integrating fiber segments, and it is suitable for use where a straightforward media conversion is needed between equipment racks, wiring closets, and fiber distribution points.

Suitable for

• Extending Ethernet over multimode fiber for building-to-building or floor-to-floor links
• Linking legacy copper devices or unmanaged switches to a Gigabit fiber uplink
• Creating a fiber connection for network switches, media converters, and access points
• Integrating copper-based equipment into campus and enterprise fiber segments

Key specifications

• Copper port: 1 × RJ45 supporting 10/100/1000 Mbps with autonegotiation
• Fiber port: 1 × 1000Base-SX multimode fiber (SC)
• Function: Media conversion (copper to multimode fiber)
• Link conversion: 1x10/100/1000Base-T ↔ 1x1000Base-SX

How to use

Install the Microsense MS400240 by connecting the RJ45 copper cable from the copper device or switch to the converter’s RJ45 port and connect multimode fiber to the 1000Base-SX SC fiber port toward the fiber uplink or patch panel. Power the unit according to the manufacturer’s instructions (use the supplied power adapter if included) and verify link LED indicators on both copper and fiber ports to confirm successful link establishment. No special configuration is required for basic media conversion; the device operates transparently between the two media types while allowing the copper side to negotiate speed with the connected device.

Usage recommendations

Use multimode OM1/OM2/OM3 fiber compatible with 1000Base-SX standards and ensure fiber patching and polarity are correct. Place the converter in a dry, ventilated location near patch panels or equipment racks, and verify cable lengths and connector cleanliness to maintain signal quality.