HPE J4858C 850nm 1.25Gbps SFP Transceiver Module – New

The HPE J4858C 850nm SFP Transceiver is a high-performance fibre optic module designed for seamless Gigabit connectivity across enterprise, data centre, and campus networks. Engineered for reliability and optimal signal performance, it supports data rates up to 1.25Gbps over multimode fibre, making it ideal for high-bandwidth applications, switch uplinks, and storage networks.

With DOM support and VCSEL laser technology, this module provides real-time monitoring and stable transmission over distances of up to 550 metres using OM2 fibre. Fully compliant with IEEE 802.3z and MSA standards, it ensures broad compatibility with HPE ProCurve and other networking systems for plug-and-play deployment in new or expanding infrastructures.

✔ Key Features & Benefits

✔ High-Speed Connectivity – Supports up to 1.25Gbps data transmission for smooth and reliable Gigabit networking.
✔ Optimised for Short-Range Fibre Links – Operates over OM2 multimode fibre up to 550m, ideal for inter-switch or backbone connections.
✔ Advanced Optical Technology – Utilises VCSEL 850nm components for enhanced stability and low latency.
✔ DOM Monitoring – Allows real-time diagnostics of optical output, temperature, and performance.
✔ Standards Compliant – MSA and IEEE 802.3z compliance ensures wide device compatibility and network flexibility.

✔ Ideal Uses

✔ Ideal for data centres requiring fibre uplinks between switches
✔ Suitable for enterprise LAN and campus backbone environments
✔ Perfect for storage networks and server connectivity over multimode fibre
✔ Effective for high-speed network expansion with HPE ProCurve equipment

✔ Specifications

✔ Condition: New – Device has been extensively tested and is 100% functional.
✔ Brand Compatibility: HPE ProCurve (J4858C Compatible)
✔ Form Factor: SFP
✔ Max Data Rate: 1.25Gbps
✔ Wavelength: 850nm
✔ Transmission Distance: Up to 550m over OM2 Multimode Fibre
✔ Connector Type: Duplex LC
✔ Optical Component: VCSEL 850nm
✔ Media Type: Multimode Fibre (MMF)
✔ DOM Support: Yes
✔ TX Power: -9.5 to -3dBm
✔ Receiver Sensitivity: < -17dBm
✔ Temperature Range: 0°C to 70°C (Commercial Grade)
✔ Protocols Supported: MSA Compliant, IEEE 802.3z
✔ Warranty: 12 Month Warranty
✔ What’s in the Box: HPE J4858C 850nm SFP Transceiver Module