Description
The AddOn Cisco® QDD-400G-SR4.2-BD-AO is a high-performance QSFP-DD transceiver that delivers 400GBase-BX SR4.2 PAM4 throughput over multi-mode fiber (MMF) for distances up to 100 m. Operating across wavelengths from 850 nm to 902 nm, this transceiver uses VCSEL and PD array technology and features an MPO-12 connector for seamless high-density connectivity.
Engineered to meet or exceed OEM standards, it is 100% compatible with Cisco® equipment and is fully hot-pluggable for simple installation. Support for Digital Optical Monitoring (DOM) allows real-time diagnostics of key parameters, while CMIS 4.0 compliance ensures interoperability in modern high-speed data center, enterprise, and access network environments. This module also supports 4×100G breakout functionality, making it an ideal choice for scalable, high-bandwidth architectures. Built to the highest quality standards, it is RoHS compliant, lead-free, TAA compliant, and backed by AddOn’s limited lifetime warranty.
| Specification | Details |
|---|---|
| SKU | QDD-400G-SR4.2-BD-AO |
| Form Factor | QSFP-DD |
| Data Rate | 400 Gbps |
| Application | 400GBase-BX SR4.2 PAM4 |
| Wavelength Range | 850 nm – 902 nm |
| Interface | MPO-12 |
| Fiber Type | Multi-Mode Fiber (MMF) |
| Max Distance | 100 m |
| Breakout Support | 4×100G breakout |
| Connector Type | MPO-12 |
| Compliance | CMIS V4.0, MSA Compliant |
| DOM Support | Yes |
| Operating Temperature | 0 °C to 70 °C (Commercial) |
| Power Consumption | 11 W (typical) |
| Supply Voltage | 3.14 V – 3.46 V |
| Average Launch Power per Lane | -6.5 dBm to 4 dBm |
| Receiver Sensitivity (OMAouter) | ≤ –6.6 dBm |
| Extinction Ratio | ≥ 3 dB |
| Hot Pluggable | Yes |
| ESD Protection | Excellent |
| Compliance Standards | TAA, RoHS, Lead-Free |
| Warranty | Limited Lifetime Warranty |
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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.
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