Add reliable and cost-effective 40 Gigabit Ethernet connections over single-mode fiber, with this QSFP+ module. This 40GBase-LR4 QSFP+ module delivers what you need most in your network connections: reliable performance. It's built to exacting MSA specifications and fully tested to ensure seamless compatibility. The single-mode QSFP+ transceiver module offers a cost-effective way to add, replace or upgrade the ports on your networking equipment, and it's backed by a lifetime warranty. Delivers 40 Gigabit Ethernet connections With data transfer rates of up to 40Gbps and support for Digital Diagnostics Monitoring (DDM / DOM), this QSFP+ module can be installed into fiber networking equipment with an MSA compliant port, using an LC connector. It delivers dependable 40 Gigabit connectivity over single-mode fiber for 40GBase-LR4 compliant networks, with a maximum distance of up to 10 km (6.2 mi.) and 1270 nm to 1330 nm optical wavelength. Built for reliable network performance This optical transceiver is engineered to meet or exceed the industry's MSA (Multi-Source Agreement) standards. StarTech.com brings its established reputation for high-quality connectivity solutions to SFP transceivers, providing SFPs that match major OEM brands in performance and reliability. Committed to the highest standards, StarTech.com provides an extensive range of networking products including copper and fiber network cards, fiber media converters, Ethernet switches and wireless products. Convenient and scalable Delivering both convenience and scalability, this fiber transceiver is fully hot-pluggable, which enables you to install it without interrupting network traffic or having to reboot your equipment. It provides a versatile solution that's compatible with a wide range of networking equipment, allowing you to expand your network to remote segments cost-effectively. You can count on QSFP40LR4ST for reliable performance, backed by a lifetime warranty and free lifetime technical support.