Cisco QSFP-40G-LR4-S=

Brand: Cisco | SKU: QSFP-40G-LR4-S=

The QSFP-40G-LR4-S= is a Cisco 40GBASE-LR4 QSFP+ transceiver module designed for long-range data transmission up to 10 kilometers over single-mode fiber (SMF), utilizing four 10 Gbps channels with LC duplex connectivity and supporting Digital Optical Monitoring (DOM).

Refurbished Availability

Refurbished versions of the Cisco QSFP-40G-LR4-S= are available from Comtek, providing a cost-effective solution without compromising on quality. Each unit undergoes rigorous multi-stage testing and comprehensive quality assurance processes to ensure industry-leading reliability and performance. Opting for refurbished equipment enables significant savings compared to purchasing new hardware, while still benefiting from warranty coverage and trusted support.

Expert Repair Service

Comtek offers expert repair services for Cisco QSFP-40G-LR4-S= modules and similar transceivers across multiple vendors, including Cisco, Juniper, and Nokia. Our highly trained engineers deliver fast turnaround times, helping network, telecoms, and critical infrastructure organisations minimise downtime and extend the lifespan of their existing assets. With comprehensive diagnostics and repair capabilities, Comtek is your trusted partner for keeping mission-critical systems operational.

Global Presence

With repair centres and offices strategically located in the UK, Northern Ireland, Germany, Greece, and the USA, Comtek delivers responsive service and support worldwide. Our global coverage ensures customers receive timely assistance, local expertise, and seamless logistics, all contributing to enhanced satisfaction and peace of mind wherever your operations are based.

Committed to Sustainability

Comtek is dedicated to supporting the circular economy by professionally refurbishing and repairing telecom, network, and infrastructure equipment. Our services help customers extend the useful life of their hardware, reducing electronic waste and contributing to significant carbon savings. By choosing sustainable solutions, clients gain long-term value while supporting responsible resource management and environmental stewardship.

For more information or to request a quote, please visit our contact form. All refurbished and repaired equipment comes with warranty coverage for peace of mind.