NSComm NVIDIA/Mellanox Compatible 800G OSFP Finned Top to 2 x 400G QSFP112 InfiniBand NDR Active Electrical Breakout Cable up to 5m(16ft)
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- 800G OSFP (Finned Top) to 2¡Á400G QSFP112 InfiniBand NDR Active Electrical Breakout Cable (AEC)
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Overview
The NSComm 800G OSFP Finned Top to 2¡Á400G QSFP112 Active Electrical Breakout Cable (AEC) is built for InfiniBand NDR clusters, enabling you to break out one 800G twin-port OSFP link into two 400G QSFP112 links. Unlike passive copper, AEC integrates active components and retimer chips to amplify and reshape PAM4 signals, reducing jitter and improving transmission quality-ideal for stable, high-speed AI/HPC fabrics.
Because NVIDIA InfiniBand is the market's mainstream for NDR-scale clusters, this AEC breakout is optimized for NVIDIA (IB) environments and is verified for common NVIDIA Quantum-2 switching and ConnectX-class adapter deployments. It supports 8¡Á100G PAM4 to dual 4¡Á100G PAM4 signaling, delivers ultra-low latency with low BER, and is designed for short-to-medium reach cabling up to 5m. The OSFP finned-top end adds cooling headroom for dense switch cages.
Compatibility Options (Coding) - NVIDIA Focus, Multi-Vendor Ready
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Recommended option: choose NVIDIA (IB) coding for NVIDIA InfiniBand NDR fabrics (Quantum-2 / ConnectX-class deployments).
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Also available: selectable coding options for other platforms (choose the matching option on the product page).
Not sure which coding you need? Contact our certified engineers and we'll help confirm the right option for your exact model.
Use Scenarios / Applications
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Quantum-2 to ConnectX fanout: connect one 800G OSFP switch port to two 400G QSFP112 adapter/HCA ports in GPU racks.
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NDR fabric scaling: expand clusters efficiently by splitting high-speed ports into multiple 400G links.
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Cross-rack GPU pod links: short-to-medium reach cabling between adjacent racks for AI training clusters.
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Stable PAM4 breakouts: use AEC when you need better signal integrity than passive copper for 800G¡ú2¡Á400G.
Key Specifications
| Specification | Details |
|---|---|
| Vendor Name | NSComm |
| Product Type | 800G OSFP (Finned Top) to 2¡Á400G QSFP112 InfiniBand NDR Active Electrical Breakout Cable (AEC) |
| Form Factor | OSFP (Finned Top) to 2¡ÁQSFP112 |
| Max Data Rate | 850Gbps (8¡Á106.25Gbps) |
| Media | Copper |
| Cable Type | Active Electrical Breakout Cable (AEC) |
| Signal Conditioning | Retimer chips (active signal reshape) |
| Modulation Format | 8¡Á100G-PAM4 ¡ú Dual 4¡Á100G-PAM4 |
| Power Consumption | 12W @800G; 7.5W @400G |
| Minimum Bend Radius | 38mm |
| Wire AWG | 28AWG |
| Jacket Material | PET |
| Temperature Range | 0 to 70¡ãC |
| Application | 800G InfiniBand (NDR) |
| Standards / Compliance | OSFP MSA Rev 5.0, IEEE 802.3ck, CMIS 5.0, SFF-8679 |
| Warranty | 5 Years |
Why Choose NSComm 800G¡ú2¡Á400G NDR Breakout AEC?
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NVIDIA-optimized: designed for NVIDIA InfiniBand NDR cluster builds.
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Retimed stability: retimers reduce jitter and improve PAM4 signal integrity.
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Ultra-low latency / low BER: helps keep large-scale training and cluster traffic stable.
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Port efficiency: one 800G port becomes two 400G links for flexible topologies.
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Thermal-friendly: OSFP finned top supports dense switch cages.
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Engineer-backed support: coding selection and NDR cabling guidance available.
Options
Available lengths: 1m, 2m, 3m, 4m, 5m
Coding options: select NVIDIA (IB) or other vendor coding on the product page
More Details
Quality Certifications
Do you have any question about NSComm 800G OSFP Finned Top to 2 x 400G QSFP112 AEC Cable?
Warranty
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