NVIDIA Mellanox MFA7U10-H020 400Gb/s to 2x200Gb/s OSFP to 2xQSFP56 Active Optical Splitter Cable, 20m: This is a 20-meter active optical splitter cable designed for cross-generational InfiniBand fabric interconnects. It features a single OSFP connector on the host end (operating at 400Gb/s via 8x 50G PAM4 lanes) which breaks out to two QSFP56 connectors (each at 200Gb/s HDR). This "Twin-Port HDR" configuration connects next-generation Quantum-2 (NDR) switches to existing Quantum (HDR) switches or ConnectX-6 adapters. This is a fixed-length integrated assembly. This is a refurbished unit.
Engineering Context
The MFA7U10-H020 enables "island" upgrades in large HPC fabrics by allowing new Quantum-2 NDR switches (MQM9700 series) to drive legacy HDR compute nodes without replacing the entire fabric. While the OSFP connector is physically capable of 800G, this splitter utilizes the interface to drive two 200G HDR links (400G aggregate). At 20 meters, it supports inter-rack and end-of-row topologies. The active optical engine ensures zero signal degradation and EMI immunity across the full span. OEM-branded equivalents include Lenovo 03LE615.
Deployment & Use Cases
Connecting new OSFP-based Quantum-2 NDR leaf switches to racks of existing HDR-based DGX A100 systems. Linking high-density 400G switch ports to distributed 200G NVMe-oF storage targets across adjacent racks. Extending the life of HDR infrastructure while establishing an NDR core backbone. Inter-rack fabric connectivity in mixed-generation data centers.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MFA7U10-H020
Host Interface: 1x OSFP (Finned Top)
Target Interface: 2x QSFP56
Data Rate: 400Gb/s (8x50G PAM4) to 2x 200Gb/s HDR
Cable Type: Active Optical Splitter (AOC)
Length: 20m
Fiber: Multimode (MMF) 850nm
Power: Max 10W (OSFP) / 5W per QSFP56 end
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
OSFP end: Compatible with NVIDIA Quantum-2 NDR switches (MQM9700, MQM9790). Port must be configured for 2x200G split mode. QSFP56 ends: Compatible with ConnectX-6 VPI, ConnectX-6 Dx, BlueField-2 DPUs, and Quantum HDR switches (MQM8700 series). OSFP connector will not fit into QSFP-DD cages. QSFP56 PAM4 ends are not compatible with legacy QSFP28 NRZ ports. Fixed 20m length, cannot be shortened or extended.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS validates every MFA7U10 splitter for split-port negotiation and optical signal levels before shipment. We provide expert guidance on mixing NDR and HDR infrastructure, global shipping, and comprehensive warranty.