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Home Networking NVIDIA Mellanox MFA7U10-H020 400Gb/s HDR AOC Splitter Cable

NVIDIA Mellanox MFA7U10-H020 400Gb/s HDR AOC Splitter Cable

NVIDIA Mellanox MFA7U10-H020 400Gb/s HDR AOC Splitter Cable

Brand:

NVIDIA Mellanox

The MFA7U10-H020 is an NVIDIA Mellanox active optical splitter cable for HDR InfiniBand fabrics. It converts a single 400Gb/s OSFP connection into two 200Gb/s QSFP56 connections over a 20-meter optical assembly, providing a practical way to connect newer high-bandwidth OSFP infrastructure with two 200Gb/s HDR endpoints. NVIDIA identifies this exact SKU as an HDR AOC splitter in its official ordering and compatibility documentation.

OVERVIEW

The MFA7U10-H020 is a 20m active optical splitter cable designed for HDR InfiniBand connectivity, using one 400Gb/s OSFP connector and two 200Gb/s QSFP56 connectors. It is positioned for data-center fabrics that need to connect a 400Gb/s OSFP interface to two 200Gb/s HDR endpoints without deploying separate cable assemblies. Compatibility: HDR InfiniBand; verify switch/HCA support and port configuration. Model comparison: H020 is the 20m version; the H003/H005/H010/H015/H030 variants provide different lengths.

USE CASES

AI and GPU cluster fabrics: Connects 400Gb/s OSFP infrastructure to two 200Gb/s HDR endpoints where supported.
HPC interconnects: Provides high-bandwidth optical connectivity for compute-intensive InfiniBand environments.
Legacy-to-new fabric integration: Bridges 400Gb/s OSFP interfaces with 200Gb/s QSFP56 HDR ports.
Data-center spine-to-endpoint connectivity: Supports structured optical cabling between high-speed fabric components.
Two-endpoint connectivity: One OSFP-side interface connects to two independent QSFP56-side connections, reducing the need for separate cable runs.
Distributed rack layouts: The 20m length supports longer in-row or inter-rack connections than short-reach variants.
GPU server connectivity: Useful where supported 200Gb/s HDR HCAs require connection to higher-speed OSFP-based infrastructure.
InfiniBand fabric expansion: Helps extend existing HDR environments while accommodating OSFP-based 400Gb/s interfaces.

KEY FEATURES

400Gb/s OSFP to 2 × 200Gb/s QSFP56: Provides a defined breakout architecture for connecting one 400Gb/s interface to two 200Gb/s interfaces.
Active Optical Cable (AOC): Uses an active optical assembly rather than a passive copper cable, making it suitable for the specified longer 20m optical connection.
20-meter reach: Provides additional routing distance for inter-rack and data-center deployments without selecting a shorter cable variant.
HDR InfiniBand support: Designed specifically for HDR InfiniBand applications, aligning the cable with high-performance computing and accelerated-computing fabrics.
OSFP connector on the 400Gb/s side: Matches supported 400Gb/s OSFP-based switch or fabric interfaces.
Dual QSFP56 connectors: Terminates into two separate 200Gb/s QSFP56 interfaces, supporting the intended breakout topology.
Multimode optical architecture: NVIDIA documentation describes the assembly as using multimode-fiber pairs for the optical connection.
SFF-8665 compliance for QSFP56 pluggable implementation: Supports standardized QSFP56 mechanical/electrical interface requirements on the breakout side.
NVIDIA-qualified part number: NVIDIA lists MFA7U10-H020 in its official cable ordering and ConnectX-7 firmware compatibility documentation, simplifying BOM validation.

TECHNICAL SPECIFICATIONS

Brand: NVIDIA Mellanox
Part Number: MFA7U10-H020
NVIDIA OPN: 980-9I115-00H020
Product Type: Active Optical Splitter Cable
Application: InfiniBand HDR
Cable Architecture: 400Gb/s to 2 × 200Gb/s
400Gb/s Interface: OSFP
200Gb/s Interfaces: 2 × QSFP56
Maximum Aggregate Rate: 400Gb/s
Per Breakout Link: 200Gb/s
Cable Length: 20 meters
Optical Technology: Active optical
Fiber Type: Multimode fiber
Optical Pairs: 8 MMF pairs on OSFP side
Breakout Mapping: 4 MMF pairs to each QSFP56 end
QSFP56 Standard: SFF-8665 compliant implementation
Data Rate: HDR
Connector Configuration: 1 × OSFP to 2 × QSFP56
Cable Type: Twin-port HDR AOC splitter
Intended Fabric: InfiniBand HDR
Compatibility: Supported HDR OSFP/QSFP56 platforms; verify exact HCA/switch
SKU Length Variant: H020 = 20m
Flat-Top Version: No; separate H020-FLT SKU exists
NVIDIA Lifecycle Listing: P-Rel in NVIDIA ConnectX-7 firmware documentation
Primary Deployment: AI, HPC and high-performance data-center fabrics

Why Choose This Product?

Purpose-built 400G breakout: Provides a defined 400Gb/s-to-dual-200Gb/s topology instead of requiring separate, unverified cabling combinations.
20m deployment flexibility: Gives infrastructure teams more routing distance for racks positioned farther apart.
HDR InfiniBand design: Targets the high-performance interconnect requirements of AI, GPU and HPC environments.
Single OSFP to dual QSFP56: Simplifies a specific breakout connection where one high-speed OSFP port must reach two 200Gb/s endpoints.
Optical reach without passive-copper limitations: Active optical construction is appropriate for the specified 20m distance.
NVIDIA-documented SKU: The exact MFA7U10-H020 part number appears in NVIDIA's official ordering and firmware compatibility documentation, supporting procurement verification.
Clear length identification: The H020 designation corresponds to 20m, helping prevent accidental substitution with shorter or longer variants.
Useful for infrastructure modernization: Enables supported environments to connect 200Gb/s HDR endpoints to 400Gb/s OSFP-based infrastructure.

CUSTOMER REVIEW

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