NVIDIA MMS4A00 1.6T OSFP 2xDR4 200G/lane Singlemode Transceiver (500 m, 2×MPO-12 APC)

Product Overview

The NVIDIA MMS4A00 implements 1600 Gbit/s as a twin-port 2xDR4 OSFP module: eight electrical lanes at 200 Gb/s PAM4 feed two 4-lane DR4 optical interfaces on dual MPO-12 APC connectors, transmitting at 1310 nm over singlemode fiber to a documented 500 m. NVIDIA lists support for the XDR 800 Gb/s InfiniBand protocol, positioning the module for Quantum-X800-class AI fabrics.

As a 200G-per-lane (224G-class SerDes generation) module, it halves the fiber count per terabit versus 100G-lane 800G optics and tracks the industry’s stated roadmap toward 1.6T switch ports for AI training clusters.

Typical applications include NVIDIA Quantum-X800 InfiniBand and Spectrum-X-class 1.6T fabric links in large AI training clusters, 2×800G twin-port breakout topologies, and next-generation leaf-spine tiers where 200G/lane optics reduce fiber and port counts.

• 1600 Gbit/s 2xDR4 twin-port OSFP, 8×200G-PAM4 electrical lanes
• XDR 800 Gb/s InfiniBand protocol support (NVIDIA official doc)
• 1310 nm over SMF to 500 m via 2× MPO-12 APC connectors
• 200G-per-lane generation halves fiber count per terabit vs 100G lanes
• Flagship module class for Quantum-X800-era AI fabrics