Fiber optic transceiver module HPE ProCurve Gigabit-SX-LC J4858B-RFB

The HPE ProCurve Gigabit-SX-LC J4858B-RFB is a compact SFP fiber optic transceiver module designed for 1 Gbit/s Ethernet links over multimode fiber. Operating at an 850 nm wavelength, this module supports short-range gigabit connectivity and is compatible with HPE networking equipment that accepts Mini-GBIC/SFP form-factor modules. The transceiver's small dimensions (13 mm × 57.9 mm × 13 mm) make it suitable for high-density switch and router ports while meeting RoHS environmental compliance.

Advantages

This HPE ProCurve transceiver provides a reliable gigabit fiber connection with an industry-standard SFP interface, facilitating easy hot-plug replacement and interoperability with compatible HPE hardware. Its SX optics at 850 nm are optimized for short-range multimode fiber runs, offering stable throughput at 1000 Mbit/s. The module's compact size supports dense port layouts and helps maintain consistent performance across enterprise and data center networking environments.

Suitable for

• Short-range gigabit Ethernet links over multimode fiber (MMF)
• Upgrading or replacing SFP ports on HPE ProCurve switches and compatible devices
• High-density rack deployments where compact transceiver modules are required
• Campus network segments, server uplinks, and closet-to-closet fiber connections

Key specifications

• Brand: HP Enterprise
• Model / MPN: J4858B-RFB
• Interface type: SFP (Mini-GBIC)
• Maximum data transfer rate: 1000 Mbit/s (Gigabit Ethernet)
• Wavelength: 850 nm (SX optics)
• Connector type: LC
• Physical dimensions: 13 mm (W) × 57.9 mm (D) × 13 mm (H)
• Compliance: RoHS
• EAN: 5705965863152

How to use

Install the transceiver by inserting the SFP module into a compatible SFP port on the HPE switch or device until it seats securely; ensure the host device is powered according to the vendor's guidelines. Connect the multimode fiber cable with LC connectors to the module's LC port, taking care to use appropriate duplex MMF (typically OM1/OM2/OM3 depending on distance requirements). Verify link status and speed through the switch management interface or LED indicators, and perform any required software/firmware checks for compatibility with the host device.

Recommendations

Use this SX-LC transceiver for short-distance multimode fiber runs within buildings or between nearby network closets. Avoid using it on single-mode fiber or beyond the specified distance limits for SX optics. Keep fiber connectors clean and follow proper ESD precautions when handling the module. For optimal compatibility, consult HPE device documentation and firmware requirements before deployment.