Description
The AddOn QDD-8SFP56-PDAC1M-AO is an industry-standard 400GBase-CU QSFP-DD to 8xSFP56 direct attach cable designed for high-performance networking. Operating over passive copper with a maximum reach of 1.0 meter (3.3 ft), this twinaxial cable ensures reliable, low-latency connections for data centers, enterprise networks, and high-bandwidth applications.
Each unit is uniquely serialized, programmed, and rigorously tested for compliance, guaranteeing seamless interoperability. Built to MSA standards and TAA compliant, this cable provides exceptional value as a cost-effective, factory-original alternative, backed by AddOn’s limited lifetime warranty.
| Category | Details |
|---|---|
| Manufacturer | AddOn |
| Manufacturer Part Number | QDD-8SFP56-PDAC1M-AO |
| Brand Name | AddOn |
| Product Type | Twinaxial Network Cable |
| Cable Type | Twinaxial (Passive) |
| Cable Length | 1m (3.28 ft) |
| Connector on First End | 1 × QSFP-DD Network – Male |
| Connector on Second End | 8 × SFP56 Network – Male |
| Data Transfer Rate | 400 Gbit/s |
| Device Supported | Network Devices, Transceivers |
| Product Material | Copper |
| Features | Passive, MSA Compliant, TAA Compliant |
| Dimensions (H × W × L) | 0.5" × 0.5" × 39.4" |
| Weight (Approx.) | 0.30 lb |
| Certifications | MSA Compliant, TAA Compliant |
| Packaged Quantity | 1 |
| 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
