Overview The Cisco QSFP-40G-LR4-S= is a 40 Gigabit Ethernet transceiver module designed to provide high-speed connectivity over single-mode fiber. Operating at a wavelength of 1310 nm, it supports data transmission distances up to 10 kilometers, making it suitable for data centers, enterprise networks, and high-performance computing environments. Its compact plug-in design allows for easy integration into existing network hardware, delivering reliable and consistent performance for core and distribution layer applications. Key features Supports 40Gbps data transfer rate to handle demanding network traffic efficiently Uses 40GBase-LR4 Ethernet protocol optimized for long-reach single-mode fiber connections Compact QSFP+ form factor enables high port density and easy installation in network switches and routers Operates at 1310 nm wavelength with a transmission range of up to 10 kilometers, ideal for extended network links Low power consumption helps maintain energy efficiency in dense networking environments Complies with industry standards to ensure broad compatibility and reliable operation across various deployments Durable design backed by a 1-year warranty for peace of mind in critical network infrastructure Key specs Data rate: 40 Gbps Form factor: QSFP+ Ethernet protocol: 40GBase-LR4 Wavelength: 1310 nm (range 1271 nm to 1331 nm) Maximum transmission distance: 10 km (6.2 miles) Fiber type: Single-mode fiber Dimensions: 0.5 inches high, 0.7 inches wide, 2.9 inches deep Warranty: 1 year Connectivity and compatibility This transceiver module is designed to fit seamlessly into Cisco network equipment that supports QSFP+ interfaces, enabling straightforward upgrades or expansions of existing 40GbE infrastructure. Its adherence to 40GBase-LR4 standards ensures compatibility with a wide range of single-mode fiber optic cabling and network devices, making it a flexible choice for various network topologies. Ideal uses and environments The Cisco QSFP-40G-LR4-S= is well suited for environments requiring stable, high-speed fiber connections over long distances. It works effectively in data centers where core switches need to connect across large facilities, enterprise networks that span multiple buildings, and high-performance computing clusters demanding low-latency, high-bandwidth links. Its compact size and low power draw also make it a practical option for dense networking racks where space and energy efficiency are priorities.
