Lenovo Mellanox® 03GX922 / NVIDIA MFA7U10-H010 Active Optical Splitter Cable: This is a fixed-length integrated active optical cable (AOC) assembly designed to bridge the gap between next-generation NDR (Next Data Rate) infrastructure and existing HDR (High Data Rate) deployments. It features one OSFP connector (operating at 400Gb/s NDR) on the host side, breaking out to two QSFP56 connectors (each operating at 200Gb/s HDR) on the target side. Unlike passive copper solutions, this active fiber assembly includes integrated transceivers within the connector shells, ensuring signal integrity over longer distances without requiring separate optics and patch cords.
🔧 Technical Specifications
OEM: Lenovo
Lenovo P/N: 03GX922
NVIDIA Reference P/N: MFA7U10-H010 / 980-9I111-00H010
Host Connector: 1x OSFP (NDR 400Gb/s)
Target Connectors: 2x QSFP56 (HDR 200Gb/s)
Cable Type: Active Optical Cable (AOC) - Multimode Fiber
Length: 10 Meters
Data Rate: 400Gb/s split to 2x 200Gb/s
🌐 Engineering Context: This splitter is a critical component for "Generation Bridging" in modern data centers. It allows network architects to upgrade their core switching infrastructure to NVIDIA Quantum-2 (NDR) OSFP switches while retaining existing Quantum (HDR) QSFP56 servers or storage arrays. Compared to DAC (copper) splitters, this 10m AOC provides superior EMI immunity and eliminates the weight/bend-radius limitations of thick gauge copper, making it essential for inter-rack connectivity where airflow obstruction must be minimized.
🧠 Typical Use Cases
Fabric Upgrades: Connecting a new NVIDIA MQM9700 (NDR) switch to legacy HDR100/HDR200 servers.
High-Density Aggregation: Splitting a single 400G switch port into two 200G links to double the port density for downstream devices.
AI Cluster Expansion: Integrating H100 (NDR) and A100 (HDR) compute nodes within the same InfiniBand fabric.
 
✅ Compatible With: NVIDIA InfiniBand Architecture.
Host Side (OSFP): NVIDIA Quantum-2 Switches (e.g., MQM9700 series) configured for 2x split mode.
Target Side (QSFP56): NVIDIA ConnectX-6 VPI Adapters, Quantum (HDR) Switches, and BlueField-2 DPUs.
MSA Compliance: Fully compliant with OSFP and QSFP56 MSA standards for mechanical and electrical interfaces.
❌ NOT Compatible With: Incompatible Protocols.
Standard Ethernet: This specific part is keyed and programmed for InfiniBand SDR/DDR/QDR/FDR/EDR/HDR/NDR protocols. It generally does not support standard Ethernet negotiation without specific firmware overrides.
QSFP28 Ports: The target ends are QSFP56 (HDR). While physically similar to QSFP28, they require PAM4 signaling support which older 100G hardware may not provide.
 
🌡️ Thermal & Handling Guidelines
Bend Radius: As an optical cable, maintain a minimum bend radius of 30mm during installation to prevent micro-bends in the fiber which can cause signal attenuation.
OSFP Cooling: The OSFP connector dissipates heat generated by the internal signal processing (DSP/Laser). Ensure the switch port has adequate airflow (C2P/P2C matching the environment).
Connector Orientation: The OSFP connector is keyed. Do not force insertion. The "pull-tab" mechanism is robust but should be used gently to disengage the locking mechanism before removal.
 
🤝 Why Choose T.E.S IT-SOLUTIONS? We specialize in enterprise-grade Lenovo and NVIDIA networking solutions. Every unit, including complex AOC splitters, is strictly validated for InfiniBand protocol negotiation and bit-error-rate performance in our lab. We offer expert consultation on fabric topology, fast worldwide shipping, and a comprehensive warranty to ensure your data center infrastructure runs without compromise.