NVIDIA/Mellanox MMS4A00-XM (980-9IAH1-00XM00) twin-port transceiver, 1600Gbps, OSFP 2DR4, InfiniBand XDR, 2xMPO, 1310nm SMF, EML, up to 500m, IHS (Finned Top)

NVIDIA/Mellanox Original MMS4A00-XM twin-port transceiver, 1600Gbps, OSFP, 2xMPO, 1310nm SMF, EML, up to 500m, IHS

The NVIDIA MMS4A00-XM is a 1.6Tb/s twin-port OSFP single-mode optical transceiver designed for XDR 800Gb/s InfiniBand networking. The module integrates two independent 800Gb/s DR4 optical engines (2×DR4). Each engine operates with 4 lanes of 200G-PAM4 signaling, resulting in an electrical configuration of 8 lanes of 200G-PAM4.On the optical side, the transceiver provides two DR4 interfaces over two MPO-12/APC connectors, each supporting up to 500 meters over single-mode fiber. This dual-engine 2×800G architecture enables the Quantum-X800 QM3400 72-cage switch to scale up to 144 ports of 800Gb/s InfiniBand connectivity. The module uses an IHS (Integrated Heat Sink) OSFP shell to satisfy the thermal requirements of high-density XDR switch environments.