Reef Optics 400GBASE-SR8 QSFP-DD Optical Transceiver — NVIDIA Mellanox Compatible
Deliver high-density 400 Gigabit Ethernet connectivity for your data center, HPC cluster, or AI infrastructure with this Reef Optics 400GBASE-SR8 QSFP-DD transceiver. Engineered for 100% compatibility with NVIDIA Mellanox switches and NICs (replaces MMA1U00-WS / T-DQ8FNS-N00), this module provides a cost-effective alternative to OEM optics — backed by Reef Telecom's industry-leading 10-year warranty.
Key Specifications
-
Form Factor: QSFP-DD (Quad Small Form Factor Pluggable Double Density)
-
Data Rate: 400Gbps (8x 50Gb/s PAM4 modulation)
-
Standard: 400GBASE-SR8, IEEE 802.3bs compliant
-
Wavelength: 850nm (VCSEL)
-
Max Distance: 70m over OM3 / 100m over OM4 multimode fiber
-
Connector: MPO-16 (APC)
-
Digital Diagnostic Monitoring (DDM): Yes — real-time monitoring of temperature, voltage, TX/RX power
-
Breakout Support: 2x 200G-SR4 or 8x 50G-SR configurations
-
Power Consumption: <10W
-
Operating Temp: 0°C to +70°C (commercial)
-
Compliance: MSA, QSFP-DD CMIS Rev 4.0, RoHS
Compatibility & Use Cases
Drop-in compatible with NVIDIA Mellanox ConnectX and Spectrum series switches and NICs requiring 400GBASE-SR8 QSFP-DD optics. Ideal for short-reach data center interconnects, AI/ML training clusters, high-performance computing environments, and 200G-to-400G network upgrades. Hot-swappable design enables installation without network downtime.
Free shipping on orders over $300. Every Reef Optics transceiver is backed by our 10-year warranty and tested for guaranteed compatibility.
