• 1000BASE-SX Standard Compliance: Compliant with IEEE 802.3z 1000BASE-SX standard for reliable Gigabit Ethernet over multimode fiber
• Hot-Swappable SFP Form Factor: Standard SFP form factor supporting hot-swapping without network disruption for easy installation and replacement
• Digital Diagnostic Monitoring (DDM): Built-in DDM/DOM support for real-time monitoring of optical parameters
• 850nm VCSEL Technology: Uses VCSEL technology for reliable optical performance over multimode fiber
• Wide Operating Temperature: Supports operating temperatures from 0°C to 70°C for standard enterprise environments

The J4859D is a 1000BASE-SX SFP transceiver compatible with HPE Aruba networking equipment. Like the J4858D, it provides 1.25 Gbps connectivity over multimode fiber with 850nm wavelength, supporting distances up to 550m over 50/125µm OM2 multimode fiber.

This hot-pluggable transceiver features digital diagnostic monitoring for real-time parameter tracking, enabling proactive network maintenance and troubleshooting. It is compliant with IEEE 802.3z 1000BASE-SX standards, SFF-8472 MSA for digital diagnostic monitoring, and SFP MSA for mechanical and electrical specifications.

The J4859D uses 850nm VCSEL technology for reliable optical performance over multimode fiber and is ideal for short-distance fiber connections in campus and data center environments.

Fully compliant with IEEE 802.3z 1000BASE-SX standards, ensuring reliable interoperability with HPE Aruba networking equipment.

Standard SFP form factor supports hot-swapping without network disruption, enabling easy installation and replacement.

Built-in DDM/DOM support provides real-time monitoring of optical parameters for proactive network maintenance.

Uses VCSEL technology for reliable optical performance over multimode fiber infrastructure.

Consumes ≤ 0.8W of power, minimizing the power budget impact on the host switch.

Ideal for short-distance fiber connections up to 550m within the same building or campus using multimode fiber.

Perfect for connecting network devices between buildings on the same campus using multimode fiber.

Suitable for data center top-of-rack to end-of-row connections where multimode fiber is installed.

Can be deployed on existing multimode fiber infrastructure for cost-effective network upgrades from 100M to 1G.