Juniper Networks QFX-QSFP-40G-ESR4

Brand: Juniper Networks | SKU: QFX-QSFP-40G-ESR4

The QFX-QSFP-40G-ESR4 is a 40GbE QSFP+ transceiver module designed for extended short-range (ESR4) optical connectivity over multimode fiber, supporting distances up to 300 meters with MPO/MTP connectors. It is compatible with Juniper Networks QFX Series switches and routers.

Refurbished Availability

Refurbished Juniper Networks QFX-QSFP-40G-ESR4 modules are available from Comtek, offering a cost-effective alternative to new hardware. Each refurbished unit undergoes comprehensive quality assurance and rigorous functional testing to ensure reliable performance in demanding network environments. By choosing refurbished equipment, customers benefit from significant cost savings without compromising on quality or operational reliability.

Expert Repair Service

Comtek provides expert repair services for the QFX-QSFP-40G-ESR4 and similar products from major vendors including Cisco, Juniper, and Nokia. Our skilled engineers deliver rapid turnaround times, restoring critical transceivers and modules to full functionality. This service is ideal for network operators, telecoms providers, and critical infrastructure users seeking to maximize uptime and minimize replacement costs.

Global Presence

With repair centres and offices strategically located in the UK, Northern Ireland, Germany, Greece, and the USA, Comtek offers truly global support. Our international footprint ensures responsive service, localized expertise, and fast shipping, enabling us to meet customer needs quickly and efficiently wherever they are based.

Committed to Sustainability

Comtek is dedicated to advancing the circular economy by extending the operational life of telecom, network, and infrastructure equipment. Our refurbishment and repair solutions help to reduce e-waste, lower carbon emissions, and deliver long-term value for our customers. By choosing Comtek, you are making a positive impact on the environment while optimizing your technology investments.

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.