Cisco GLC-BX40-D-I

The Cisco GLC-BX40-D-I is a small form-factor pluggable (SFP) transceiver module manufactured by Cisco Systems. It is designed for use in Cisco networking equipment and provides a Gigabit Ethernet interface. The "GLC" in the model name stands for Gigabit Interface Converter (GBIC) and "BX40-D-I" refers to the specific variant of the module. The GLC-BX40-D-I is a bidirectional (BiDi) transceiver, meaning it uses a single strand of fiber optic cable to transmit and receive data. It operates over a single wavelength, with a transmit wavelength of 1490 nm and a receive wavelength of 1310 nm. The "BX40" in the model name indicates that it is designed for use with single-mode fiber optic cables. This transceiver module is typically used in Cisco switches, routers, and other networking devices to provide high-speed connectivity over long distances using fiber optic infrastructure. It supports data rates of up to 1 Gbps and can transmit data up to a distance of 40 kilometers (approximately 24.8 miles).