QSFP-40G-LR4 — QSFP+ 40 Gbps

The QSFP-40G-LR4 is a Cisco QSFP+ 40 Gbps transceiver certified to the IEEE 40GBASE-LR4 standard, enabling transmissions up to 10 km over single-mode fiber (SMF) via an LC UPC duplex connector. LR4 technology splits the 40G signal into four WDM channels at 10 Gbps each over a single fiber pair, optimizing the use of existing SMF infrastructure. Operating range: 0 to 70 °C.

This module is the standard solution for 40 Gbps inter-datacenter or campus links spanning up to 10 km, leveraging already-deployed single-mode fiber. It suits operators, IT service companies, and large enterprises modernizing their backbone without laying new fiber. Genuine Cisco hardware, manufacturer warranty.