QFX-QSFP-40G-ESR4 Juniper Compatible Transceiver

The QFX-QSFP-40G-ESR4 is a 40G QSFP 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
• Data Rate: 40G
• OEM Equivalent: QFX-QSFP-40G-ESR4

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.

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.

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