StarTech.com J4859C 1.25Gbps LC 10km Transceiver

Network downtime can cripple your business, especially when you need reliable fibre links over long distances. The StarTech.com J4859C 1.25Gbps LC 10km Transceiver is a hot-swappable SFP module that gives you stable 1 GbE connectivity on both single-mode and multimode fibre, letting you extend your network up to 10 km without costly rewiring.

Key Features of a 1.25 Gbps transceiver

• Wavelength: 1310 nm. Ideal for long-reach single-mode fibre runs, delivering clear signals over many kilometres.
• Maximum Data Transfer Rate: 1.25 Gbps. Supports full-duplex gigabit Ethernet for fast, reliable traffic.
• Fibre Type: Single Mode / Multi Mode. Gives you flexibility to use existing cabling or upgrade as needed.
• Connector: LC. A compact, widely-used connector that fits standard patch panels and switches.
• Maximum Transfer Distance: 10 km (SM) / 1 km (MM). Enables campus-wide or data-center interconnects without repeaters.
• MTBF: 3,092,408 hours. Provides exceptional reliability, reducing the risk of unexpected failures.
• Power Consumption: < 1 W. Keeps energy costs low while maintaining performance.
• Digital Diagnostics Monitoring (DDM): Yes. Lets you monitor temperature, voltage and optical power in real time for proactive maintenance.

StarTech.com transceiver solution

If you manage a growing network, you know that finding a fibre module that works seamlessly with HPE switches can be a headache. Compatibility issues, limited reach and high power draw are common pain points. This transceiver is engineered to match HPE J4859C specifications, so you can plug it in and keep your network humming, whether you’re linking office buildings or extending a data-centre backbone.

Benefits of StarTech.com transceiver

• Lifetime Warranty: Peace of mind with a full-life guarantee and multilingual support.
• Hot-Swap Ready: Replace or upgrade without shutting down the network, minimising disruption.
• Low Power Use: Saves electricity and reduces heat output in dense rack environments.
• High MTBF: Fewer failures mean lower maintenance costs and higher uptime.
• DDM Insight: Real-time diagnostics help you spot issues before they affect users.

Usages of a 1.25 Gbps transceiver

The 1.25 Gbps transceiver is perfect for connecting campus buildings, extending data-centre links, or upgrading legacy fibre runs in enterprise networks. Its dual-mode capability means you can use it on existing multimode cabling for short hops or switch to single-mode for long-distance projects, all while maintaining gigabit Ethernet performance.

Specifications