NSComm NVIDIA/Mellanox Compatible 800G OSFP Finned Top to 4 x 200G QSFP112 Active Direct Attach Copper Breakout Cable up to 5m(16ft)
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800G OSFP (Finned Top) to 4 x 200G QSFP112 Active Direct Attach Copper Breakout Cable (ACC/DAC), InfiniBand NDR
Overview
The NSComm 800G OSFP Finned Top to 4200G QSFP112 Active Direct Attach Copper (ACC/DAC) Breakout Cable is a high-density, cost-effective solution for InfiniBand NDR networking, allowing you to split one 800G twin-port OSFP connection into four 200G QSFP112 links. With integrated active copper and factory-terminated connectors, it simplifies cabling while reducing the cost and complexity of optical modules for short-to-medium reach links.
Because NVIDIA InfiniBand is the mainstream platform for NDR AI/HPC clusters, this breakout ACC is optimized for NVIDIA (IB) environments (select NVIDIA coding on the product page), while still supporting selectable options for other ecosystems when needed. It uses 100G-PAM4 signaling and integrates a redriver chip to compensate for loss and crosstalk, improving signal integrity across racks. The OSFP finned-top end provides extra cooling for dense switch ports, making it ideal for Quantum-2 class fabrics.
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-7 fanout: connect one 800G OSFP switch port to four 200G QSFP112 NIC/adapter ports in GPU racks.
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NDR fabric build-out: quickly scale InfiniBand NDR clusters while keeping cabling simple and rack-friendly.
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Cross-rack GPU pod wiring: short-to-medium reach breakout links for AI pods where bandwidth density and airflow matter.
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Switch-to-endpoint aggregation: use 800G ports efficiently by feeding multiple 200G endpoints without optics.
Key Specifications
| Specification | Details |
|---|---|
| Vendor Name | NSComm |
| Product Type | 800G OSFP (Finned Top) to 4200G QSFP112 Active Direct Attach Copper (ACC/DAC) Breakout Cable |
| Form Factor | OSFP (Finned Top) to 4QSFP112 |
| Max Data Rate | 800Gbps (4200Gbps) |
| Media | Copper |
| Cable Type | Active Breakout DAC (ACC) |
| Signal Conditioning | Built-in redriver chip |
| Modulation Format | OSFP: 8100G-PAM4; QSFP112: 2100G-PAM4 |
| Max Power Consumption | 1.7W (OSFP end); 0.3W (per QSFP112 end) |
| Minimum Bend Radius | 32.5mm |
| Wire AWG | 26AWG |
| Jacket Material | PET |
| Temperature Range | 0 to 70C |
| DDM/DOM | Not supported |
| Standards / Compliance | OSFP MSA Rev 5.0, QSFP112 MSA, IEEE 802.3ck, CMIS 5.0 |
| Warranty | 5 Years |
Why Choose NSComm 800G to 4 x 200G NDR Breakout ACC?
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NVIDIA-ready: optimized for NVIDIA InfiniBand NDR fabrics.
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One 800G port, four 200G links: maximize switch port density and simplify fanout.
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Signal integrity: redriver compensates loss/crosstalk for reliable cross-rack use.
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Thermal-friendly: OSFP finned top supports dense switch deployments.
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Power efficient: defined per-end power for easier capacity planning.
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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
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