Cisco 100Base-LX SFP Transceiver Module

The Cisco GLC-FE-100LX is a small form factor pluggable transceiver module that brings 100Base-LX connectivity to compatible Cisco switches and routers. It enables reliable links over single-mode fiber and supports distances up to 10 kilometers, making it useful for campus backbones, building-to-building links, or any network segment where copper cabling cannot cover the required span.

With a data rate of 1 Gb/s at a 1310 nm wavelength, the module delivers smooth data transmission without the latency or signal loss often seen in long copper runs. Network teams can hot swap the unit without taking equipment offline, which simplifies upgrades and maintenance during live operations.

The transceiver operates in environments ranging from 32 to 158°F, so it fits naturally in wiring closets, data centers, and temperature-challenged field cabinets. IT staff who manage mixed Fast Ethernet and Gigabit Ethernet ports will appreciate its dual-rate interoperability, allowing the same hardware to serve different speed requirements as the network evolves.

• 100Base-LX SFP transceiver module for Cisco switches and routers
• Supports single-mode fiber links up to 10 km
• 1 Gb/s data rate at a 1310 nm wavelength
• Hot swappable design for uninterrupted maintenance
• Wide operating temperature range of 32 to 158°F
• Works in dual-rate Fast or Gigabit Ethernet ports