SYNOXX 400G QSFP-DD LR4 Transceiver EQD400-LR4 Duplex LC 10km

The SYNOXX EQD400-LR4 is a 400G QSFP-DD LR4 hot-pluggable optical transceiver delivering 400Gbps over single-mode fiber (SMF) to 10km using PAM4 modulation across 4×100G WDM optical lanes at 1310nm. LR4 architecture multiplexes four separate 1310nm wavelengths onto a single SMF strand via an integrated WDM multiplexer, each lane carrying 100Gbps PAM4 — enabling full 400G throughput over a standard Duplex LC SMF connection without the 8-fibre MPO infrastructure required by SR8 transceivers. This makes the EQD400-LR4 the correct 400G QSFP-DD choice for long-reach data center interconnect (DCI) links, campus backbone connections between buildings, ISP aggregation layers, and any 400G deployment where single-mode fiber is the installed medium and reach exceeds the 100m OM4 ceiling of the EQD400-SR8.

Compliant with QSFP-DD MSA, IEEE 802.3bs, and 400GAUI-8, the EQD400-LR4 includes DDM/DOM monitoring for real-time visibility of temperature, voltage, bias current, and transmit/receive optical power — enabling continuous link health monitoring without external test equipment. Power consumption is below 10W in a hot-pluggable QSFP-DD form factor, operating from 0°C to 70°C across all standard data center and enterprise switching environments. Note: Verify CMIS version support with your switch firmware before deployment — confirm QSFP-DD MSA and CMIS compliance with your specific switch vendor for full DDM functionality.

IC Certified by Industry Canada (ISED), the SYNOXX EQD400-LR4 meets regulatory requirements for commercial deployment.