Axiom QDD-400G-ER4 optical transceivers are compatible with Juniper switches

Axiom QDD-400G-ER4. Now certified for seamless Juniper compatibility

Austin, TX – May 30, 2025 – Axiom, a leading provider of high-performance optical transceivers and networking solutions, proudly announces that its QDD-400G-ER4 40km optical transceiver has achieved full compatibility with the Juniper QFX5240-64QD, one of the industry’s most advanced 400G data center switches.

The Axiom QDD-400G-ER4 is engineered for long-reach, high-capacity data transmission, supporting distances up to 40 kilometers over single-mode fiber (SMF). With its compliance to the QSFP-DD MSA and 400GBASE-ER4 standards, the transceiver delivers exceptional performance, reliability, and interoperability in and for demanding hyperscale and enterprise environments.

Key Features

• Data Rate: 400Gbps

• Reach: Up to 40km over SMF

• Connector: Dual LC

• Form Factor: Hot-Pluggable QSFP-DD 

• Power Consumption: Low (10W)

After extensive interoperability testing, Axiom confirms that the QDD-400G-ER4 operates seamlessly with the Juniper QFX5240-64QD, ensuring optimal performance, plug-and-play integration, and full support for Junos OS features. This compatibility empowers network operators to deploy cost-effective, high-capacity optical links without compromising on quality or vendor flexibility.

“This compatibility milestone reinforces Axiom’s commitment to delivering open, high-performance optical solutions that meet the evolving needs of modern data centers,” said Keith Carpenter, CEO at Axiom. “Our customers can now confidently deploy the QDD-400G-ER4 with Juniper’s latest switching platforms to achieve scalable, long-distance 400G connectivity.”

The Axiom QDD-400G-ER4 is available now through authorized distributors and resellers.

For more information, visit our 400GBASE-ER4 QSFP-DD Transceiver SMF LC 40km 1295-1309nm Juniper Compatible product page or contact sales@axiomupgrades.com.