JNP-QSFPDD-400G-FR4 Juniper Compatible 400G QSFP-DD FR4 Transceiver

The JNP-QSFPDD-400G-FR4 is a 400G QSFP-DD optical transceiver engineered as a drop-in equivalent for Juniper platforms,, recognized by the host as a genuine module and ready to pass traffic the moment it seats with no CLI changes.

• Form Factor: QSFP-DD
• Data Rate: 400G
• Protocol: FR4
• Fiber Type: SMF
• Reach: 2km
• Connector: Duplex LC
• OEM Equivalent: JNP-QSFPDD-400G-FR4

Compatibility: Compatible with Juniper platforms — accepted in 400G QSFP-DD ports on the ACX7100 (ACX Series), MX10004/MX10008 (MX Series), PTX10000 Series, QFX5130 Series, QFX5220 Series, and QFX5700 Series. This module follows Juniper's published compatibility matrix; for your exact line card or OS release, email 10.4@tenfouroptics.com and we'll confirm fit.

Tested & Proven: Every TenFour Optics part is coded, tested, and verified before shipment — see Tested & Proven.

A medium-reach single-mode module tuned for the modern data center — short interconnect hops between halls and rows in high-density spine-leaf fabrics. It pairs single-mode reach with low latency and modest power for 100G-and-up east-west traffic that has outgrown multimode. It operates 2km.

It is programmed to present native host values, so it interoperates link-to-link with OEM modules on the far end and coexists with installed optics in the same line card without compatibility flags.

Each unit is programmed to match Juniper host values and bench-tested for traffic conformity, DOM-threshold accuracy, and optical cleanliness before it leaves the bench. Class 1 laser certified and RoHS compliant.

Backed by the GreenLights4Life® Limited Lifetime Replacement Warranty. In-stock items ship same or next business day.