The GLC-FE-100LX-RGD is a high-quality SFP transceiver module that provides Fast Ethernet connectivity over single-mode fiber optic cables. It supports the 100BASE-LX standard, allowing it to transmit data at Fast Ethernet speeds over distances of up to 10 kilometers. The transceiver operates at a wavelength of 1310nm, making it suitable for medium-range communication. It features an LC (Lucent Connector) interface for easy and reliable fiber optic cable connection.