

HPE J4859D X121 1G SFP LC SX Transceiver – Gigabit Ethernet Optical Module
The HPE J4859D is a 1G SFP SX transceiver for multimode fiber, offering reliable short-range connectivity and 3-year FortiCare support for enterprise networks.
- Description
Description
The HPE J4859D is a high-performance 1 Gigabit SFP (Small Form-Factor Pluggable) transceiver designed to provide reliable and efficient fiber connectivity for HPE networking devices. Supporting 1000BASE-SX standard, this module enables high-speed data transmission over multimode fiber (MMF), making it ideal for short-range network connections within data centers, enterprise campuses, and wiring closets.
Operating at a wavelength of 850nm, the J4859D supports transmission distances of up to 550 meters depending on fiber quality, ensuring stable and low-latency connectivity. It features an LC duplex connector and is fully compatible with a wide range of HPE switches and networking equipment, ensuring seamless integration into existing infrastructure.
This transceiver is hot-swappable, allowing easy installation and replacement without network downtime. Built to enterprise standards, it ensures high reliability, low power consumption, and consistent performance in demanding network environments.
With 3 years of FortiCare support, businesses benefit from proactive assistance, firmware updates, and rapid replacement services, ensuring continuous network availability and minimal disruptions.
Key Features:
- 1G SFP transceiver supporting 1000BASE-SX standard
- Operates at 850nm wavelength for multimode fiber (MMF)
- Supports up to 550m transmission distance
- LC duplex connector for secure fiber connectivity
- Hot-swappable design for easy installation and maintenance
- Low power consumption with high reliability
- Compatible with HPE switches and networking devices
- 3-Year FortiCare support for proactive maintenance and replacement





