Build short-reach 10-Gig fiber links with a transceiver designed for predictable enterprise use. The AddOn JC859A-AO compatible SFP+ module supports 10GBASE-SR over multimode fiber, using an 850 nm wavelength and LC connector to deliver a clean fit for common switch and server uplink environments. With a rated reach of 300 m, it covers the distances most often needed in closets, aggregation points, and campus distribution layers. TAA compliance makes it appropriate for public sector and regulated procurement paths, while the SFP+ form factor keeps it aligned with dense, modern networking hardware. This is the kind of optic chosen when compatibility, procurement clarity, and operational consistency matter more than chasing the lowest sticker price. For teams standardizing on dependable multimode optics, the JC859A-AO offers a straightforward path to stable 10-Gig connectivity without adding complexity to the network design.