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400G QSFP-DD to 4×QSFP56 Active Optical Cable (AOC), 400G to 4×100G
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Product Highlights:
- 400G QSFP-DD to 4×100G QSFP56 breakout
- 8×50Gbps PAM4 signaling
- Retimed 400GAUI-8 interface
- 0.5m to 50m reach options
- Integrated active optical conversion
- CMIS 4.0 compliant
- Ideal for AI, HPC, and high-density data centers
Table of Contents
Description
The 400G QSFP-DD to 4×QSFP56 Active Optical Cable (AOC) is a high-density breakout optical interconnect designed to connect one 400G QSFP-DD interface to four independent 100G QSFP56 interfaces. Supporting 8×50Gbps PAM4 signaling and a retimed 400GAUI-8 electrical interface, it provides a practical solution for 400G-to-4×100G Ethernet breakout applications. Integrated active optical conversion eliminates the need for separate optical transceivers and patch cables, while the 0.5m to 50m length range provides greater routing flexibility than short-reach copper breakout solutions. Hot-pluggable QSFP-DD and QSFP56 interfaces, a 3.3V single power supply, and CMIS 4.0 compliance make the AOC suitable for high-density data centers, switches, servers, AI infrastructure, and HPC systems.
Specification
| Cable Configuration | QSFP-DD to 4×QSFP56 |
|---|---|
| Aggregate Data Rate | 400Gbps |
| Breakout Configuration | 400G to 4×100G |
| Optical / Electrical Signaling | PAM4 |
| Lane Configuration | 8×50Gbps PAM4 |
| Electrical Interface | Retimed 400GAUI-8 |
| Electrical Interface Alignment | IEEE 802.3bs |
| Management Compliance | CMIS V4.0 |
| Transmission Distance | 0.5–50m |
| QSFP-DD End | 400G |
| QSFP56 Ends | 4×100G |
| Power Supply | Single +3.3V |
| Operating Case Temperature | 0°C to +70°C |
| Hot-Pluggable | Yes |
| Compliance | RoHS |
Features
- 400G QSFP-DD to 4×100G QSFP56 breakout configuration
- Up to 400Gbps aggregate bandwidth
- Four independent 100G QSFP56 connections
- 8×50Gbps PAM4 signaling
- Retimed 400GAUI-8 electrical interface
- Integrated active optical conversion
- 0.5m to 50m length options
- Hot-pluggable QSFP-DD and QSFP56 interfaces
- 3.3V single power supply
- CMIS 4.0 compliant
- No separate optical transceivers required
- No intermediate fiber patch cables required
- Greater routing flexibility than copper breakout solutions
Applications
- 400G to 4×100G Ethernet breakout
- 400GbE network connectivity
- Data center switch interconnects
- Switch-to-server connectivity
- AI and GPU clusters
- High-performance computing
- High-density rack interconnects
- 400G network expansion and migration
- High-density Ethernet networks
FAQ
What is the breakout configuration?
The AOC connects one 400G QSFP-DD port to four independent 100G QSFP56 ports, enabling a single 400G interface to connect directly with four 100G network devices.
What signaling technology does it use?
The cable supports 8×50Gbps PAM4 signaling with a retimed 400GAUI-8 electrical interface for high-speed 400G connectivity.
What lengths are available?
The AOC is available in lengths from 0.5 meters to 50 meters, providing flexible routing for different rack and data center layouts.
Why choose this AOC instead of a copper breakout cable?
The active optical design provides greater reach and routing flexibility than short-reach copper solutions while integrating the optical conversion and fiber connectivity into a single cable assembly.
Is the AOC compliant with CMIS 4.0?
Yes. The cable supports CMIS 4.0 and features hot-pluggable QSFP-DD and QSFP56 interfaces for compatible network equipment.
Featured DACs & AOCs Comparison Guide
| SKU | Cable Type | Data Rate | Form Factor A | Form Factor B | Wire Type | Length |
| AOC-100GQSFP28-5 | AOC | 100G | QSFP28 | QSFP28 | OM4 Fiber Cable | 5M |
| AOC-10GSFP-10 | AOC | 10G | SFP+ | SFP+ | OM4 Fiber Cable | 10M |
| AOC-25GSFP28-3 | AOC | 25G | SFP28 | SFP28 | OM4 Fiber Cable | 3M |
| AOC-40GQSFP-10 | AOC | 40G | QSFP+ | QSFP+ | OM3 Fiber Cable | 10M |
| AOC-QSFP-10G4SFP-5 | AOC | 40G | QSFP+ | 4*SFP+ | OM3 Fiber Cable | 5M |
| AOC-QSFP28-4SFP28-3 | AOC | 100G | QSFP28 | 4×SFP28 | OM3 Fiber Cable | 3M |
| DAC-100GQSFP28-25G4SFP28-P5 | DAC | 100G | QSFP28 | 4×SFP28 | 24AWG | 5M |
| DAC-100GQSFP28-P3 | DAC | 100G | QSFP28 | QSFP28 | 26AWG | 3M |
| DAC-10GCX4-P05 | DAC | 10G | CX4 | CX4 | 28AWG | 3M |
| DAC-10GSFP-P10 | DAC | 10G | SFP+ | SFP+ | 24AWG | 10M |
| DAC-400GQSFP-P5 | DAC | 400G | QSFP-DD | QSFP-DD | 30AWG | 5M |
| DAC-40GQSFP-P07 | DAC | 40G | QSFP+ | QSFP+ | 28AWG | 7M |
| DAC-QSFP-10G4SFP-P03 | DAC | 40G | QSFP+ | 4 * SFP+ | 30AWG | 3M |
| DAC-SFP-P05 | DAC | 1.25G | SFP | SFP | 30AWG | 5M |
Quality Qulifications and Compliance
To get the detailed certification, please go to the Compliance.
Please Note: Our products comply with all internationally recognized and industry-standard specifications. For customized or special requirement products, we carry out testing and standards in accordance with the conformity criteria specified in the contract.
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