The Cisco GLC-LH-SMD is a 1000BASE-LX/LH SFP (Small Form-Factor Pluggable) transceiver module designed for use in optical networks. Here are the key details:OverviewForm Factor: SFP (Small Form-Factor Pluggable)Data Rate: 1 Gbps (Gigabit Ethernet)Wavelength: 1310 nmDistance: Supports distances up to 10 km over single-mode fiber (SMF)FeaturesConnector Type: LC duplex connectorOptical Interface: 1000BASE-LX/LHCompatibility: Works with various Cisco switches, routers, and firewalls that support SFP modules.Digital Optical Monitoring (DOM): Allows for real-time monitoring of the module's performance, including temperature, voltage, and optical power levels.ApplicationsIdeal for enterprise networks, data centers, and service provider networks where high-speed, reliable connectivity over long distances is required.Suitable for applications that require connectivity between different buildings or over large areas.Environmental SpecsOperating Temperature: Typically ranges from 0°C to 70°C, depending on the specific model.Storage Temperature: Usually from -40°C to 85°C.BenefitsHot-Swappable: Can be replaced without powering down the device, which minimizes downtime.Flexible Deployment: Compatible with various Cisco devices, making it a versatile choice for expanding network capabilities.Summary The Cisco GLC-LH-SMD is a reliable, high-performance SFP transceiver that facilitates long-distance data transmission in optical networks, making it a popular choice for businesses looking to enhance their networking infrastructure.