Aruba / J4859D / Single mode 1G SFP LC LX 10KM SMF XCVR ( Original )

The Aruba / J4859D / Single Mode 1G SFP LC LX 10KM SMF XCVR ( Original ) is a genuine HPE Aruba optical transceiver module built for enterprise-grade Gigabit Ethernet deployments that demand long-distance reliability and uncompromising compatibility. Operating at a precise 1310 nm wavelength, this original module transmits data at up to 1.25 Gbps across single-mode fibre with a reach of up to 10 km, making it the trusted choice for inter-building campus links, data centre uplinks, and high-availability backbone runs. Furthermore, being an original HPE Aruba component ensures full firmware recognition, warranty preservation, and seamless integration with the entire Aruba and HPE ProCurve switch ecosystem — including the 2530, 2920, 2930F, 2930M, and 3810M series — without the configuration risks associated with third-party alternatives. The hot-pluggable SFP form factor allows live insertion and removal while the host switch remains fully operational, eliminating costly network downtime during upgrades or replacements. Additionally, the Aruba / J4859D / Single Mode 1G SFP LC LX 10KM SMF XCVR ( Original ) supports Digital Optical Monitoring (DOM / DDM) in full compliance with SFF-8472, giving network engineers real-time visibility into transmit and receive optical power, laser bias current, supply voltage, and module temperature — all from the switch management interface. Consequently, fault diagnosis becomes proactive rather than reactive, dramatically reducing mean time to repair. The duplex LC connector accepts standard 9/125 µm SMF cable, while the module also supports distances of up to 550 m over 50/125 µm or 62.5/125 µm multimode fibre when used with a mode-conditioning patch cable. Moreover, with a maximum power draw of just 1.0 W and a guaranteed optical budget of 15 dB, this transceiver delivers long-haul reach without adding unnecessary heat load to your switch chassis. Rated for 0 °C to 70 °C operation and fully CE, RoHS, and FCC certified, the original J4859D is engineered to perform in any standard indoor network environment. To check availability, check our stock. For full official product details, visit the HPE Aruba official product page.

Key Features:

• Original HPE Aruba Genuine Module — Factory-encoded EEPROM ensures full switch recognition, warranty compliance, and zero compatibility risk across all supported Aruba platforms
• 10 km SMF Reach at 1310 nm — Delivers reliable 1000BASE-LX/LH Gigabit Ethernet over 9/125 µm single-mode fibre at a 1310 nm wavelength with a guaranteed 15 dB optical budget
• Hot-Pluggable Duplex LC SFP — Live insertion and removal supported without powering down the switch, minimising disruption to production network environments
• DOM / DDM Real-Time Diagnostics — SFF-8472-compliant monitoring of Tx/Rx optical power, laser bias current, temperature, and voltage directly from the switch CLI or GUI
• CE, RoHS & FCC Certified, 1.0 W Max — Meets all international safety and environmental standards while keeping power consumption and thermal output extremely low