QDD-400G-ZR Arista Compatible 400G QSFP-DD ZR 80km SMF Transceiver

A like-for-like QSFP-DD replacement for the Arista QDD-400G-ZR, matched on its 400G coherent ZR line rate and its 80km single-mode reach. Slotting into the same QSFP-DD cage behind a duplex LC, it carries Arista host coding from the factory, so the chassis recognizes it at insertion and the port comes up with no configuration step. Optical transmit and receive levels stay readable over DDM/DOM while in service.

• Form Factor: QSFP-DD
• Data Rate: 400G
• Type: Coherent ZR
• Fiber Type: SMF
• Reach: 80km
• Connector: Duplex LC
• OEM Equivalent: QDD-400G-ZR

Sparing stays one-for-one against the OEM unit, and the coherent ZR span keeps 400G moving across metro and inter-site links on the single-mode already in the ground. Each module is built to the governing MSA and validated per serial — coding, diagnostics, transmit performance — before it leaves the bench. Every unit is covered by the GreenLights4Life® 5-Year Replacement Warranty. In-stock items ship same or next business day — contact 10.4@tenfouroptics.com to confirm availability and lead time.