When the link spans more than a building, optics choice becomes a network design decision. The SFP-10G-CZ-1510-ACC delivers 10 GbE transport at 1510 nm with an 80 km reach over single-mode fiber, making it a strong fit for long-haul interconnects, metro-style enterprise links, and remote aggregation paths. This CWDM SFP+ module is aimed at teams that need more distance than standard short-reach optics can provide, without stepping into a different transport architecture. The LC duplex interface supports familiar fiber handling, while the Arista-compatible design helps preserve procurement flexibility in environments that standardize on interoperable optics. Choose it for production links where distance, wavelength selection, and predictable deployment matter. It is a purpose-built transceiver for networks that need to carry 10 GbE farther with fewer compromises.