Support dependable Gigabit links on multimode fiber with the JL780A-AO HP-compatible 1G-SX SFP from AddOn Networks. Built around an 850 nm optical design and LC interface, this module is suited for enterprise switching environments where short-to-medium reach connectivity needs to stay predictable and easy to service. At 1 Gbps, the optic fits access and aggregation layers without introducing unnecessary complexity. Its 550 m reach over MMF gives teams enough distance for wiring closets, campus buildings, and equipment rooms while keeping the deployment aligned with common multimode infrastructure. That makes it a sensible choice when the goal is to preserve installed fiber investment and maintain consistent port behavior across the network. For procurement, this module offers a compatible alternative to OEM optics for HP environments. For operations, it provides a straightforward path to expand or replace links using standard LC patching and a familiar 1G-SX profile. When the network needs reliable Gigabit transport rather than excess capability, this SFP keeps the design efficient and controlled.