QDD-503 Gigamon Compatible 400G QSFP-DD LR4 10km SMF Transceiver

The QDD-503 delivers 400G across single-mode spans to 10km in the QSFP-DD form factor, as a compatible replacement for the Gigamon part of the same number. At that reach it serves high-density aggregation and inter-building links, mating through a duplex LC connector and hot-swapping into a live chassis with zero host configuration.

• Form Factor: QSFP-DD
• Data Rate: 400G
• Protocol: LR4
• Fiber Type: SMF
• Reach: 10km
• Connector: Duplex LC
• OEM Equivalent: QDD-503

Compatibility: Confirm fit for your platform before you buy — email 10.4@tenfouroptics.com with your platform and we'll confirm against the vendor's current documentation.

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

It is coded to come up on Gigamon gear as a recognized LR4 module and reports operating state over DDM. Manufactured to MSA specification and individually verified — host coding and diagnostics — before it ships. Backed by the GreenLights4Life® Limited Lifetime Replacement Warranty. In-stock items ship same or next business day.