The US Transceivers compatible QDD-400G-FR4 is a 400GBASE-FR4 QSFP-DD optical transceiver designed for high-density 400G Ethernet deployments. Operating over duplex single-mode fiber, this module transmits across four LWDM wavelengths in the 1310 nm region using LAN-WDM technology, supporting link distances up to 2 km. It is fully compliant with IEEE 802.3bs and QSFP-DD MSA standards.
This transceiver delivers 400 Gbps aggregate throughput by combining four 100G PAM4 lanes, making it well suited for data center interconnect, core switching, and high-performance computing environments. The compact QSFP-DD form factor enables high port density in modern 400G-capable switches and routers.
Manufactured to meet strict quality and interoperability standards, the US Transceivers compatible QDD-400G-FR4 supports Digital Diagnostic Monitoring (DDM) and is TAA compliant, RoHS compliant, and built as a reliable, cost-effective alternative for network infrastructure upgrades.
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