Description
The AddOn Cisco® QDD-400G-LR8-S Compatible TAA 400GBase-LR8 PAM4 QSFP-DD Transceiver delivers ultra-high-speed 400 Gbps Ethernet connectivity for next-generation data center, enterprise, and service provider networks. Designed for seamless compatibility with Cisco® equipment, this hot-swappable optical module enables high-capacity data transmission over single-mode fiber (SMF) up to 10 km using wavelengths from 1270 nm to 1330 nm.
Engineered with a QSFP-DD Type 2 form factor and compliant with IEEE 802.3bs standards, it ensures superior signal integrity, low latency, and high-performance network scalability. The module supports Digital Optical Monitoring (DOM) for real-time performance metrics and is fully TAA compliant for government and enterprise procurement. Each transceiver is rigorously tested for 100% compatibility, guaranteed to initialize and perform identically to the OEM equivalent, and backed by AddOn’s limited lifetime war.
| Specification | Details |
|---|---|
| Brand | AddOn |
| SKU | QDD-400G-LR8-S-AO |
| Compatible OEM | Cisco® |
| Form Factor | QSFP-DD Type 2 |
| Data Rate | 400 Gbps (aggregate 425 Gbps) |
| Transmission Distance | Up to 10 km |
| Wavelength Range | 1270 nm – 1330 nm |
| Fiber Type | Single-Mode Fiber (SMF) |
| Connector Type | LC Duplex |
| Modulation Format | PAM4 |
| Power Dissipation | < 13 W |
| Power Supply Voltage | 3.3 V |
| Operating Temperature | 0 °C – 70 °C |
| Bit Error Ratio (BER) | 2.4 × 10⁻⁴ |
| DOM Support | Yes |
| Standards Compliance | IEEE 802.3bs, CMIS 4.0 |
| Regulatory Compliance | RoHS 2.0, FCC Part 15B, EN55022, IEC 60825-1/2 |
| Applications | 400G Ethernet, Access Networks, Enterprise, Data Centers |
| TAA Compliant | Yes |
| Warranty | Limited Lifetime Warranty |
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
