The GLC-FE-100FX-RGD is a high-quality SFP module that provides Fast Ethernet connectivity over multimode fiber optic cables. It supports the 100BASE-FX standard, allowing it to transmit data at Fast Ethernet speeds over short to medium distances using multimode fiber optic cables. The module operates at a wavelength suitable for multimode fiber, typically around 1310nm or 1550nm, depending on the specific model. It features an LC (Lucent Connector) interface for easy and reliable fiber optic cable connection.