Utilizing LC connectors and operating at a 1310nm wavelength, it enables high-speed data transmission over single-mode fiber for distances up to 10 kilometers. This module provides a reliable long-reach fiber optic connection for Gigabit Ethernet applications. This guide demystifies the key differences between SFP-1G-SX (850nm, Multimode) and SFP-1G-LX (1310nm, Single-mode) transceivers. We compare technical specifications, transmission distance, compatible fiber types, typical use cases, cost considerations, and compatibility factors. Includes a. 1000BASE-SX SFP transceivers are specifically designed to work with multi-mode fiber (MMF) and operate near the 850 nm wavelength.