Juniper Networks EX4400-EM-4S

Brand: Juniper Networks | SKU: EX4400-EM-4S

The EX4400-EM-4S is a field-installable expansion module for Juniper EX4400 Series switches, providing four additional 1/10GbE SFP/SFP+ uplink ports to enhance network connectivity and flexibility.

Refurbished Availability

Refurbished Juniper Networks EX4400-EM-4S modules are available from Comtek, offering a cost-effective alternative to new equipment without compromising on reliability. Each refurbished unit undergoes rigorous testing and comprehensive quality assurance processes to ensure optimal performance and longevity. By choosing refurbished equipment, you benefit from significant cost savings while supporting environmentally responsible business practices.

Expert Repair Service

Comtek provides expert repair services for the EX4400-EM-4S and similar network expansion modules. Our experienced engineers support multiple vendors—including Cisco, Juniper, and Nokia—delivering fast turnaround times and high-quality repairs. This service helps network, telecoms, and critical infrastructure users maximize uptime, reduce operating costs, and extend the life of their essential equipment.

Global Presence

With repair centres and offices strategically located in the UK, Northern Ireland, Germany, Greece, and the USA, Comtek delivers responsive and reliable service to customers worldwide. Our extensive global coverage ensures fast logistics, expert local support, and seamless customer service, wherever your network infrastructure operates.

Committed to Sustainability

At Comtek, we are dedicated to supporting the circular economy by extending the useful life of telecom, network, and infrastructure equipment. Our refurbishment and repair services help reduce electronic waste and carbon emissions, delivering long-term value for our customers while promoting sustainability and environmental responsibility across the industry.

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.