Description
The AddOn QDD-8SFP56-PDAC2M-AO is an industry-standard 400GBase-CU QSFP-DD to 8xSFP56 passive direct attach cable designed for high-performance networking environments. This 2-meter (6.56 ft) copper cable provides a reliable, cost-effective interconnect solution for short-range, high-bandwidth data center and enterprise applications.
Built to MSA (Multi-Source Agreement) standards and fully TAA compliant, this cable ensures compatibility with major OEM equipment. Each unit is programmed, uniquely serialized, and application tested to guarantee 100% functionality. Designed with a twinaxial copper build, it delivers a 400 Gbit/s data transfer rate while maintaining signal integrity and efficiency.
With its plug-and-play design, this direct attach cable supports seamless deployment in switches, routers, and other network devices. AddOn backs this product with a limited lifetime warranty, ensuring long-term performance and reliability.
| Category | Details |
|---|---|
| Manufacturer | AddOn |
| Manufacturer Part Number | QDD-8SFP56-PDAC2M-AO |
| Brand Name | AddOn |
| Product Type | Twinaxial Network Cable |
| Cable Type | Passive Copper Twinaxial |
| Cable Length | 2m (6.56 ft) |
| First End | 1 x QSFP-DD Network (Male) |
| Second End | 8 x SFP56 Network (Male) |
| Connector Gender | Male to Male |
| Data Transfer Rate | 400 Gbit/s |
| Device Supported | Network Device |
| Features | Passive, MSA Compliant, TAA Compliant |
| Material | Copper |
| Dimensions (HxWxL) | 0.5" x 0.5" x 78.7" |
| Weight (Approximate) | 0.30 lb |
| Certifications | MSA Compliant, TAA Compliant |
| Country of Origin | United States / United Kingdom |
| Warranty | Limited Lifetime |
Payment & Security
Your payment information is processed securely, and we do not store credit card details or access your credit card information.
Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
From Scope to Sign-Off
A structured delivery process designed to reduce risk and keep projects moving.
Plan
Discovery, site review, requirements gathering, and project alignment. We define scope, constraints, and success criteria before any design work begins.
- Discovery calls & stakeholder interviews
- On-site survey & infrastructure review
- Requirements & use-case documentation
- Project scope, timeline & milestone alignment
Engineer
System design, schematics, signal flow, BOM development, and documentation. Every project leaves this phase with a complete engineering package.
- AV system design & signal flow diagrams
- Equipment selection & BOM development
- Rack layout & control system design
- As-built documentation package
Deploy
Procurement, logistics, installation, programming, commissioning, and training. We own the delivery from first shipment to final handoff.
- Authorized procurement & logistics coordination
- Physical installation & cable management
- Control system programming & configuration
- Commissioning, testing & end-user training
Support
Monitoring, maintenance, lifecycle planning, and long-term service agreements. We stay engaged long after project close.
- 24/7 remote system monitoring
- Preventive & reactive maintenance
- Technology lifecycle & refresh planning
- Long-term service level agreements
A decade of delivery — trusted by 275+ clients across industries
