The US Transceivers compatible QDD-400G-DR4 is a 400GBASE-DR4 QSFP-DD optical transceiver engineered for high-density, high-performance 400G network deployments. Operating over single-mode fiber with four parallel lanes at 100G per lane, this module uses 1310 nm wavelength and supports link distances up to 500 meters, making it well suited for intra-data-center connectivity and short-reach interconnects.
Built to the QSFP-DD form factor, this transceiver delivers 400 Gbps aggregate throughput using PAM4 modulation and connects via an MPO/MTP connector interface. It supports Digital Diagnostic Monitoring (DDM/DOM), allowing real-time visibility into key parameters such as temperature, voltage, TX power, and RX power for simplified network management and troubleshooting.
The US Transceivers compatible QDD-400G-DR4 is fully TAA compliant and meets RoHS, CE, and REACH standards. It is a cost-effective, reliable alternative for use in data center interconnect, cloud infrastructure, enterprise core switching, and high-performance computing environments.

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