NSComm 400G QSFP-DD Active Direct Attach Copper Twinax Cable up to 5m(16ft)
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400G QSFP-DD to QSFP-DD Active Direct Attach Copper Twinax Cable (ACC/DAC), Active Twinax
Overview
The NSComm 400G QSFP-DD Active Direct Attach Copper (ACC/DAC) Twinax Cable is a cost-effective, low-latency interconnect solution for 400GbE short-reach links in modern data centers and telecom equipment rooms. With integrated QSFP-DD connectors on both ends, it delivers true plug-and-play deployment and reduces the cost and operational complexity of separate optical transceivers and fiber patch cords for short connections.
Designed for stable high-speed signaling, this active twinax cable features built-in Macom retiming silicon and supports a retimed 400GAUI-8 electrical interface (853.125G PAM4) for consistent 400G performance.
It keeps power predictable with max power consumption 2.5W per end and supports structured rack cabling with an 80mm minimum bend radius. Compliant with QSFP-DD MSA and SFF-8636, it is a reliable option for close-range 400G Ethernet fabrics.
Compatibility Options (Coding)
NSComm provides multi-vendor coding options (selectable on the product page) to match your switch, router, NIC, server, or storage platform across major ecosystems.
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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Leaf-spine short links (400G): interconnect leaf and spine switches for compact 400G fabrics where devices are in the same rack row.
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ToR uplinks and rack aggregation: connect ToR switches to leaf/aggregation switches with short 400G links for high-density racks.
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Telecom / data center equipment rooms: cost-effective close-range 400G interconnects where fast deployment and predictable power matter.
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LAN/SAN high-speed interconnects: short 400G Ethernet links for high-throughput network and storage environments.
Key Specifications
| Specification | Details |
|---|---|
| Vendor Name | NSComm |
| Product Type | 400G QSFP-DD Active Direct Attach Copper (ACC/DAC) Twinax Cable |
| Form Factor | QSFP-DD to QSFP-DD |
| Max Data Rate | Up to 425Gbps |
| Media | Copper |
| Cable Type | Active Twinax |
| Electrical Interface | 400GAUI-8 (853.125G PAM4, retimed) |
| Retiming / Chip | Built-in Macom chip |
| Max Power Consumption | 2.5W per end |
| Minimum Bend Radius | 80mm |
| Jacket Material | PVC |
| Temperature Range | 0 to 70C |
| Standards / Compliance | QSFP-DD MSA, SFF-8636 (IEEE 802.3cd-based ecosystem) |
| Warranty | 5 Years |
Why Choose NSComm 400G QSFP-DD ACC/DAC?
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Cost-effective 400G: reduces optics + fiber patching for short links.
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Low latency: direct copper interconnect-no optical conversion.
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Stable signaling: retimed 400GAUI-8 PAM4 interface with Macom silicon.
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Predictable power: up to 2.5W per end for reliable rack operation.
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Structured cabling: supports clean routing with defined bend radius constraints.
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Engineer-backed support: coding selection and topology guidance available on request.
Options
Available lengths: 1m, 2m, 3m, 5m
Coding options: selectable for different vendors (choose the matching option on the product page)
More Details
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