Description
The AddOn Q400G-4Q56G-AOC20M-AO is a high-performance, MSA and TAA compliant 400GBase active optical cable (AOC) featuring a QSFP-DD to 4xQSFP56 breakout design. Engineered for next-generation data centers, cloud infrastructure, and high-speed networking environments, this AOC delivers up to 56.15 Gb/s per lane using PAM4 modulation over multi-mode fiber with a maximum reach of 20 meters. It features low-latency DSP-free CDR, hot-pluggable interfaces, and low-power operation — consuming just 7.6W on the 400G end and 2.3W on the 100G ends. Built with LSZH-rated cabling and compliant with IEEE 802.3cm and CMIS 4.0 standards, this cable ensures optimal performance, safety, and reliability for demanding applications such as switch-to-server connections, storage interconnects, and NIC adapter deployments. Each unit is uniquely serialized, fully tested for interoperability, and backed by AddOn’s limited lifetime warranty.
| Specification | Description |
|---|---|
| Brand | AddOn |
| Part Number | Q400G-4Q56G-AOC20M-AO |
| Form Factor | QSFP-DD to 4xQSFP56 Active Optical Cable |
| Data Rate | Up to 400Gbps aggregate; 56.15 Gb/s per lane |
| Modulation | PAM4 |
| Wavelength | 850nm |
| Cable Type | Multi-Mode Fiber (MMF), LSZH jacket |
| Reach / Length | 20 meters (65.6 ft) |
| Connector Type | QSFP-DD to 4xQSFP56 |
| Power Consumption | 7.6W (400G end), 2.3W (100G end) |
| Power Supply Voltage | 3.3V (3.15 – 3.47V) |
| Operating Temperature | 0°C to 70°C |
| Storage Temperature | -40°C to 85°C |
| Bit Error Rate (BER) | ≤ 2.4 × 10⁻⁴ (pre-FEC) |
| Compliance Standards | MSA, CMIS 4.0, IEEE 802.3cm, RoHS |
| Features | Low latency DSP-free CDR, Hot-pluggable, LSZH-rated, Multi-data rate support |
| Applications | Data centers, switches, servers, storage systems, NIC adapters |
| Warranty | Limited Lifetime Warranty |
Payment & Security
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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
