The NVIDIA/Mellanox MMA4Z00-NS-FLT (980-9I51A-00NS00) Compatible 800G 2xSR4 OSFP Optical Transceiver Module is a high-performance Twin-Port optical solution designed for InfiniBand NDR and compatible 800G data center networking applications. Featuring Broadcom DSP and Broadcom VCSEL technology, this module delivers an aggregate bandwidth of 800Gb/s through eight 100G PAM4 lanes. It operates at an 850nm wavelength and supports transmission distances of up to 30m over OM3 multimode fiber and 50m over OM4 multimode fiber.
The 800G Twin-Port 2xSR4 architecture integrates two independent 400G SR4 optical interfaces into a single OSFP module. Each 400G interface uses four 100G PAM4 optical lanes and a dedicated MPO-12/APC connector. This configuration provides two separate 400G multimode links, enabling flexible connectivity for high-bandwidth InfiniBand NDR networks. Both optical interfaces can operate independently when supported by the host platform, allowing the module to support different network topologies and port configurations.
Built with Broadcom DSP and Broadcom VCSEL components, the module supports high-speed PAM4 signal processing and short-reach multimode optical transmission. Its 850nm optical interface supports distances of up to 30m over OM3 and 50m over OM4 multimode fiber. Two MPO-12/APC connectors provide the optical interfaces for the independent 400G links. For reliable operation, use compatible MPO-12/APC multimode fiber assemblies and verify connector polarity and fiber mapping. Breakout applications require suitable MPO-to-MPO breakout cables and host-side support for the corresponding lane configuration.
The OSFP RHS/Flat Top housing features a low-profile upper surface designed for host systems with specific mechanical clearance and cooling requirements. Unlike Finned Top OSFP modules, which use external top fins to support heat dissipation in certain air-cooled switch platforms, the Flat Top design is intended for compatible systems with an integrated cooling structure. It is suitable for supported liquid-cooled platforms and NVIDIA DGX H100 systems with the appropriate OSFP cage design. The module also supports Digital Diagnostic Monitoring (DDM), enabling monitoring of key operating parameters for network maintenance and troubleshooting.
The MMA4Z00-NS-FLT compatible 800G 2xSR4 OSFP module is designed for applicable NVIDIA/Mellanox networking environments. Before deployment, verify the host system’s OSFP cage type, thermal design, firmware, and supported module configuration. In particular, Flat Top and Finned Top modules should not be treated as mechanically interchangeable; some NVIDIA Quantum-2 and Spectrum-4 air-cooled switch configurations require Finned Top modules.
Each module undergoes functional and optical performance testing before shipment. Compatibility and parameter test documentation is available upon request. Backed by a 30-day free return policy, 1-year free replacement, 3-year warranty, and lifetime after-sales technical support, this 800G 2xSR4 OSFP transceiver provides a high-bandwidth multimode connectivity option for demanding data center and high-performance computing networks.
