Network media converter Cudy MC100GSB-40B — 1x RJ-45 Gigabit, 1x SC single-mode fiber, 1000 Mbit/s, 40 km, black

The Cudy MC100GSB-40B Gigabit Ethernet Media Converter WDM BiDi converts between copper Ethernet and fiber optic links, supporting 10/100/1000 Mbps speeds. Designed for connecting buildings or long-distance industrial control networks, this single-fiber solution supports both multi-mode and single-mode operation and uses SC fiber connectors. The A and B variants are intended to be used as a pair to establish a bidirectional single-fiber link with up to 40,000 m range.

Advantages

The media converter provides Gigabit data rates over fiber while maintaining an RJ-45 copper port for standard Ethernet devices. Its WDM BiDi design requires only one fiber strand for full duplex communication when paired (A and B units), reducing fiber infrastructure needs. The SC connector and support for both multi-mode and single-mode fibers allow flexibility for different network layouts. Its compact black housing is suitable for installation in various networking environments.

Suitable for

• Connecting two buildings over long distances
• Industrial control networks requiring extended fiber links
• Upgrading copper Ethernet links to fiber for improved distance
• Single-fiber deployments where reducing cabling is important

Key specifications

• Maximum data transfer rate: 1000 Mbit/s
• Ethernet LAN ports (RJ-45): 1
• Fiber ports quantity: 1 (SC connector)
• Supported Ethernet data rates: 10/100/1000 Mbps
• Maximum transfer distance: 40,000 m
• Color: Black

How to use

Install one A and one B variant of the Cudy MC100GSB-40B at each end of the fiber link. Connect the RJ-45 port to the local network device (switch, router, or NIC) and link the fiber ports using a single fiber strand with SC connectors. Ensure the fiber type (multi-mode or single-mode) matches on both ends and verify power and link LEDs to confirm operation. Configure connected network devices as needed for Gigabit operation.

Recommendations

Use the converter pair with appropriate single-mode or multi-mode fiber and SC connectors. For maximum range (up to 40 km), choose single-mode fiber and ensure proper fiber polishing and installation to minimize signal loss.