J4858C - HPE 1.25Gb/s SFP 550m 850nm Duplex LC MMF Transceiver

HPE J4858C ProCurve X121 1.25Gb/s 1000Base-SX Multi-Mode Fibre 850nm 550m Duplex LC Connector SFP Transceiver Module

Applications & Use Cases:

Enterprise LANs: Connects core, distribution, and access switches within office buildings (floor-to-floor backbone links)

Data Centers: Used for switch-to-switch, rack-to-rack, and server-to-switch fiber connections over short distances

Campus Networks: Enables building-to-building connectivity in universities, hospitals, and corporate campuses (≤550 m)

Industrial Environments: Ideal for factories or plants where fiber is needed to avoid electromagnetic interference (EMI)

ISP / Telecom Access: Supports short-distance links between local POPs, cabinets, or aggregation points

Structured Cabling Systems: Connects MDF to IDF for fiber backbone inside buildings

High-Interference Areas: Reliable alternative to copper in electrically noisy environments

Short-Range Backbone Links: Provides stable 1 Gbps connectivity for internal network infrastructure

• Features:
• Hot-pluggable (no downtime during install/remove)
• Supports 1 Gbps Gigabit Ethernet
• Complies with 1000BASE-SX (IEEE 802.3z)
• Works over multimode fiber (MMF)
• Uses 850 nm VCSEL laser technology
• Transmission distance up to 550 meters
• Duplex LC connector interface
• Full-duplex communication
• Supports Digital Optical Monitoring (DOM/DDM)
• Low power consumption (<1W)
• MSA compliant (multi-vendor compatibility)
• Compatible with HPE / Aruba switches
• Operates in 0°C to 70°C range