Description
The AddOn Q400G-4Q56G-AOC35M-AO is a high-performance, MSA and TAA compliant 400GBase active optical cable designed to deliver reliable, high-speed connectivity between network switches, servers, storage systems, and NIC adapters in modern data centers. This QSFP-DD to 4xQSFP56 PAM4 breakout AOC operates over multi-mode fiber (MMF) with an 850nm wavelength and a maximum reach of 35 meters, ensuring low-latency, high-bandwidth data transmission.
Featuring DSP-free electronics-based CDR, PAM4 modulation, and support for multi-data rates up to 56.15 Gb/s per lane, this cable ensures optimal performance and interoperability. With low power consumption (7.6W on the 400G end and 2.3W on the 100G ends), hot-pluggable design, LSZH-rated aqua jacket, and compliance with IEEE 802.3cm and CMIS 4.0 standards, it offers a robust solution for high-density, high-speed networking environments. Each unit is uniquely serialized, programmed, and rigorously tested for full MSA compliance and functionality, and is backed by AddOn’s limited lifetime warranty.
| Specification | Details |
|---|---|
| Brand | AddOn |
| SKU | Q400G-4Q56G-AOC35M-AO |
| Form Factor | QSFP-DD to 4xQSFP56 |
| Cable Type | Active Optical Cable (AOC) |
| Data Rate (Per Lane) | Up to 56.15 Gb/s |
| Aggregate Data Rate | 400Gbps |
| Modulation | PAM4 |
| Wavelength | 850nm |
| Fiber Type | Multi-Mode Fiber (MMF) |
| Maximum Reach | 35m |
| Power Consumption | 7.6W (400G end), 2.3W (100G end) |
| Voltage Supply | 3.3V |
| Operating Temperature | 0°C to 70°C |
| Storage Temperature | -40°C to 85°C |
| Connector 1 | QSFP-DD |
| Connector 2 | 4x QSFP56 |
| Cable Jacket | LSZH, Aqua |
| Minimum Bend Radius | 30mm (without tension) |
| Compliance Standards | MSA, TAA, IEEE 802.3cm, CMIS 4.0, RoHS |
| Hot Pluggable | Yes |
| Applications | 400G Ethernet, Data Center Interconnect, Switch-to-Server, NIC Connectivity |
| 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
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