Description
The AddOn Arista Networks® QDD-400G-SR8-AR Compatible QSFP-DD Transceiver delivers reliable, high-speed 400GBase-SR8 connectivity up to 100 meters over OM4 multimode fiber (MMF) using an 850nm wavelength and an MPO-16 APC connector. Designed for data center, enterprise, and access network environments, this transceiver ensures seamless performance and is fully compliant with IEEE 802.3bs standards.
Built with 8x50G PAM4 retimed electrical interfaces and VCSEL transmitter technology, it offers optimal signal integrity, low power consumption (9W), and a hot-swappable form factor for simplified deployment. Each unit is programmed, uniquely serialized, and rigorously tested for data-traffic and application compatibility to ensure flawless interoperability with Arista Networks® equipment.
With Digital Optical Monitoring (DOM) support for real-time diagnostics and TAA compliance for government procurement, this module is a cost-effective and high-performance choice for next-generation 400G Ethernet infrastructure. AddOn backs its quality with a limited lifetime warranty, ensuring long-term reliability in demanding environments.
| Specification | Details |
|---|---|
| SKU | QDD-400G-SR8-AR-AO |
| Form Factor | QSFP-DD |
| Data Rate | 400GBase-SR8 |
| Wavelength | 850nm |
| Fiber Type | OM4 Multimode Fiber (MMF) |
| Connector | MPO-16 APC |
| Maximum Reach | 100m |
| Electrical Interface | 8x50G PAM4 retimed (400GAUI-8) |
| Transmitter Type | VCSEL |
| Modulation Format | PAM4 |
| Power Dissipation | 9W |
| Digital Diagnostics (DOM) | Supported |
| Operating Temperature | 0°C to 70°C |
| Power Supply Voltage | 3.3V |
| Bit Rate (Aggregate) | 425 Gbps |
| Hot-Pluggable | Yes |
| Compliance Standards | IEEE 802.3bs, MSA |
| TAA Compliant | Yes |
| Applications | Data Center, Enterprise, Access Networks |
| 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
