Keep high-speed links stable across short-haul fiber runs with the Allied Telesis AT-SPSX-90 SFP module. Designed for 1000Base-SX environments, it supports Gigabit Ethernet over multimode fiber with 850 nm optics and LC connectivity, making it a practical fit for access switches, aggregation points, and campus backbones. This module is built for teams that need predictable performance from a compact, hot-swappable transceiver. With a maximum data transfer rate of 1.25 Gbit/s and support for distances up to 500 m, it covers the common range where copper falls short and longer-reach optics add unnecessary cost. The AT-SPSX-90 is compatible with Allied Telesis systems that accept SFP modules, helping standardize spares and simplify maintenance. For infrastructure teams, the value is in precision: the right reach, the right fiber mode, and the right connector for clean integration into existing multimode plant. It is a straightforward choice when you need dependable optical transport without overbuying on distance or complexity.