QDD-400G-DR4A Juniper Compatible 400G QSFP-DD DR4 500m SMF Transceiver

The QDD-400G-DR4A is a 400G QSFP-DD optical transceiver engineered as a drop-in equivalent for Juniper platforms, and is fully interoperable on Juniper switching and routing gear, hot-swappable with zero host configuration.

• Form Factor: QSFP-DD
• Data Rate: 400G
• Protocol: DR4
• Fiber Type: SMF
• Reach: 500m
• Connector: MPO-12
• OEM Equivalent: QDD-400G-DR4A

Compatibility: Documented OEM compatibility (Juniper published compatibility documentation): this module is 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.

It is qualified against Juniper host platforms and tested end to end so it behaves exactly as the OEM module it replaces, slotting into existing designs without surprises. The result is a like-for-like swap that protects the original network design while removing OEM-optics cost from the bill of materials. It operates 500m.

Host-programmed and qualified against Juniper platforms, it slots in beside existing OEM and third-party optics, reports clean DDM telemetry, and needs no special configuration to bring the link up.

We program each module to the Juniper host EEPROM and run it through traffic, DOM, and optical-cleanliness checks before it ships. Class 1 laser certified and RoHS compliant.

Backed by the GreenLights4Life® Limited Lifetime Replacement Warranty. In-stock items ship same or next business day — contact 10.4@tenfouroptics.com to confirm availability and lead time.