NSComm NVIDIA/Mellanox Compatible 800G OSFP Finned Top to 2 x 400G QSFP112 Active Direct Attach Copper Breakout Cable up to 5m(16ft)
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800G OSFP (Finned Top) to 2 x 400G QSFP112 Ethernet Active Direct Attach Copper Breakout Cable (ACC/DAC)
Overview
The NSComm 800G OSFP Finned Top to 2 x 400G QSFP112 Active Direct Attach Copper (ACC/DAC) Breakout Cable is a high-density, cost-effective solution for 800G/400G Ethernet short-to-medium reach interconnects, allowing you to split one 800G twin-port OSFP connection into two 400G QSFP112 links. With integrated active copper and factory-terminated connectors, it simplifies deployment and reduces the need for separate optical modules and fiber patch cords for short runs.
Since NVIDIA Ethernet is widely used in modern AI/data center fabrics, this breakout ACC supports NVIDIA (ETH) coding options on the product page-ideal for NVIDIA-based switching and NIC environments-while still offering selectable options for other platforms when required. It uses 100G-PAM4 signaling and includes a redriver chip to compensate for loss and crosstalk, improving signal integrity across racks. The OSFP finned-top end adds cooling headroom for dense switch ports.
Compatibility Options (Coding) - NVIDIA Focus, Multi-Vendor Ready
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Recommended option: choose NVIDIA (ETH) coding for mainstream NVIDIA Ethernet switch/NIC environments.
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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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800G switch to dual 400G endpoints: connect one 800G OSFP switch port to two 400G QSFP112 NICs in the same rack.
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Leaf/Spine short links (Ethernet): split 800G uplinks into dual 400G connections for compact pod fabrics.
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AI / HPC Ethernet racks: high-bandwidth, low-latency copper links for GPU racks where port density and clean cabling matter.
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Cross-rack expansion: short-to-medium reach breakout cabling between adjacent racks without moving to optics.
Key Specifications
| Specification | Details |
|---|---|
| Vendor Name | NSComm |
| Product Type | 800G OSFP (Finned Top) to 2 x 400G QSFP112 Active Direct Attach Copper (ACC/DAC) Breakout Cable |
| Form Factor | OSFP (Finned Top) to 2QSFP112 |
| Max Data Rate | 8 x 50Gbps (8 x 106.25Gbps) |
| Media | Copper |
| Cable Type | Active Breakout DAC (ACC) |
| Signal Conditioning | Built-in redriver chip |
| Modulation Format | 8 x 100G-PAM4 to Dual 4 x 100G-PAM4 |
| Max Power Consumption | 1.5W (OSFP end); 0.6W (per QSFP112 end) |
| Minimum Bend Radius | 40mm |
| Wire AWG | 26AWG |
| Jacket Material | PET |
| Temperature Range | 0 to 70C |
| Application | 800G/400G Ethernet |
| Standards / Compliance | IEEE 802.3ck, CMIS 5.0, OSFP MSA Rev 5.0, Q112 MSA |
| Warranty | 5 Years |
Why Choose NSComm 800G to 2 x 400G Ethernet Breakout ACC?
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NVIDIA-ready: supports NVIDIA (ETH) coding for mainstream deployments.
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One 800G port, two 400G links: maximize port utilization and simplify fanout.
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Signal integrity: redriver improves stability across racks.
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Thermal-friendly: OSFP finned top supports dense switch ports.
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Power efficient: clear per-end power for easier capacity planning.
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Engineer-backed support: coding selection and topology guidance available.
Options
Available lengths: 1m, 2m, 3m, 4m, 5m
Coding options: select NVIDIA (ETH) or other vendor coding on the product page
More Details
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