QDD-400G-LR4-10 Juniper Compatible 400G QSFP-DD LR4 10km Transceiver

The QDD-400G-LR4-10 is a 400G QSFP-DD optical transceiver engineered as a drop-in equivalent for Juniper platforms,, a like-for-like replacement that the host accepts as native, hot-swappable and ready out of the box.

• Form Factor: QSFP-DD
• Data Rate: 400G
• Protocol: LR4
• Fiber Type: SMF
• Reach: 10km
• Connector: Duplex LC
• OEM Equivalent: QDD-400G-LR4-10

As a parallel, multi-lane optic, this module anchors high-density spine-leaf fabrics and breakout topologies, aggregating several lanes into a single high-speed port. It is a backbone component of modern data-center and AI-cluster builds, where port density and bandwidth per rack-unit are the limiting factors. It operates 10km.

Coded to the host EEPROM, it comes up as a genuine module: full diagnostic visibility, no compatibility warnings, and side-by-side operation with optics already in the chassis.

Before shipment every module is coded to the host platform, then verified for protocol conformity, diagnostic accuracy, and end-face cleanliness. Class 1 laser certified, RoHS compliant.

Backed by the GreenLights4Life® lifetime warranty — buy it once, covered forever. In stock and ships same or next business day.