Description
The AddOn QDD4-400GB-FR4-AO is a high-performance QSFP-DD transceiver designed for 400GBase-FR4 Ethernet applications. Supporting data transmission up to 2km over single-mode fiber (SMF) using a 1310nm wavelength and LC duplex connector, it delivers reliable high-speed connectivity for enterprise and access networks.
This MSA-compliant, TAA-compliant module supports CMIS 4.0 management, features Digital Optical Monitoring (DOM) for real-time diagnostics, and is fully hot-pluggable. Each unit undergoes rigorous application and traffic testing to ensure seamless integration into your network environment. Built with robust EMI shielding, ESD protection, and RoHS compliance, this transceiver is backed by AddOn’s limited lifetime warranty, guaranteeing both quality and long-term reliability.
| Specification | Description |
|---|---|
| SKU | QDD4-400GB-FR4-AO |
| Form Factor | QSFP-DD |
| Data Rate | 400GBase-FR4 |
| Wavelength | 1310nm (4x53.125Gb/s PAM4) |
| Reach | Up to 2km over SMF |
| Connector | Duplex LC |
| Standards Compliance | MSA, INF-8628, TAA |
| Diagnostics | DOM (Digital Optical Monitoring), CMIS 4.0 |
| Operating Temperature | 0°C to 70°C (Commercial) |
| Power Consumption | 12W (typical) |
| Voltage Supply | 3.3V |
| Features | Hot-pluggable, excellent ESD protection, metal housing for low EMI |
| Applications | 400G Ethernet, Access, Enterprise |
| Warranty | Limited Lifetime Warranty |
| Compliance | RoHS 2.0, FCC Part 15B, EN55022, IEC 60825-1/2 (Laser Safety) |
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
