Cisco GLC-ZX-SM-RGD

The Cisco GLC-ZX-SM-RGD is a Small Form-Factor Pluggable (SFP) transceiver module manufactured by Cisco Systems. It is designed for use in Cisco networking devices and provides Gigabit Ethernet connectivity over single-mode fiber optic cables. The "ZX" in the model name indicates that it supports long-range transmission, with a maximum reach of up to 80 kilometers (49.7 miles). The "SM" stands for single-mode, indicating that it is compatible with single-mode fiber optic cables. The "RGD" signifies that it is a ruggedized version, designed to withstand harsh environmental conditions.