TEL：+86 132 6656 7067 
TEL：+86 132 6656 7067
![$v['title']](/uploads/20240925/8d7259fee1e397e089a1980af99ccf99.jpg)
3-year warranty
Technical Support
100% detection
Spot stock 
Tel：+86 132 6656 7067
Online Consultation
| Form Factor | Part No. | Fiber Type | Data Rate | Wavelength | Distance | Connector | Case Temperature | Note |
400G QSFP112- 400G QSFP112 | CLQ112-Q112CU-0.5~2 | Copper | 400G IB | Cable | 0.5M~2M | 28AWG | Com./Ind. | |
400G QSFP112- 2x200G QSFP112 | CLQ112-2xQ112CU-0.5~2 | Copper | 400G/200G IB | Cable | 0.5M~2M | 28AWG | Com./Ind. | |
400G OSFP112- 400G OSFP112 | CLO112-O112CU-0.5~2 | Copper | 400G IB | Cable | 0.5M~2M | 28AWG | Com./Ind. | |
400G OSFP112- 2x200G OSFP112 | CLO112-2xO112CU-0.5~2 | Copper | 400G/200G IB | Cable | 0.5M~2M | 28AWG | Com./Ind. | |
400G OSFP56 - 400G OSFP56 | CLO56-O56CU-0.5~ 3 | Copper | 400G IB | Cable | 0.5M~3M | 28AWG | Com./Ind. | |
400G QSFP-DD- 400G QSFP-DD | CLQD4-QD4CU-0.5~ 3 | Copper | 400G IB | Cable | 0.5M~3M | 28AWG | Com./Ind. | |
400G QSFP-DD - 2X 200G QSFP56 | CLQD4-2Q2CU-0.5~3 | Copper | 400G/ 200G IB | Cable | 0.5M~3M | 28AWG | Com./Ind. | |
400G OSFP56- 2X 200G QSFP56 | CLOSFP4-2Q56CU-0.5~3 | Copper | 400G/ 200G IB | Cable | 0.5M~3M | 28AWG | Com./Ind. | |
400G QSFP-DD-2X 200G QSFP56 | CLQD4-2Q56CU-0.5~3 | Copper | 400G/ 200G IB | Cable | 0.5M~3M | 28AWG | Com./Ind. | |
400G QSFP56- 2X 200G QSFP56 | CLQ4-2xQ56CU-0.5~3 | Copper | 400G/ 200G IB | Cable | 0.5M~3M | 28AWG | Com./Ind. | |
400G QSFP-DD-4X 100G QSFP56 | CLQD4-4Q1CU-0.5~3 | Copper | 400G/ 100G IB | Cable | 0.5M~3M | 30AWG | Com./Ind. | |
400G OSFP56- 4X 100G QSFP56 | CLOSFP4-4Q56CU-2 | Copper | 400G/ 100G IB | Cable | 0.5M~3M | 30AWG | Com./Ind. | |
400G QSFP-DD-8X50G SFP56 | CLQD4-8SCU-0.5~ 3 | Copper | 400G/ 50G | Cable | 0.5M~3M | 28AWG | Com./Ind. |
400G DAC is a direct high-speed cable used within data centers that supports a data transfer rate of 400GB per second.
400G DAC is currently the mainstream and widely deployed high-speed interconnection solution within ultra large scale data centers and AI computing clusters.
400G DAC is a cost-effective physical cable used for very short-reach connections (typically ≤3 meters). It directly links equipment such as servers and switches, serving as the backbone for internal data center interconnectivity.
400G DACTechnical Core
It features a passive design requiring no external power and utilizes PAM4 signal modulation. Employing common form factors like QSFP-DD and OSFP, it achieves a 400Gbps data rate through 8 channels.
400G DAC Core Advantages
Its primary benefits are extremely low cost and minimal power consumption (<0.1w), coupled="" with="" ultra-low="" latency.="">
400G DAC Application Scenarios
It is primarily used for interconnecting servers and switches or between switches within data center racks. In AI clusters, it is also extensively deployed for connections between GPUs and switches.
C-LIGHT 400G DAC direct attach copper cables are designed for high-bandwidth, short-reach interconnections in data centers, AI computing clusters, enterprise networks, and high-performance network infrastructure. The direct copper architecture provides a practical alternative to optical connectivity when the equipment is located within a short physical distance.
The 400G DAC product family covers multiple high-speed interface platforms, including QSFP112, OSFP112, OSFP56, and QSFP-DD. Different configurations are available for native 400G connections as well as 400G-to-200G, 400G-to-100G, and 400G-to-50G breakout architectures.
Most configurations are intended for short-distance connections from 0.5m to 3m, while selected QSFP112 and OSFP112 configurations support 0.5m to 2m. The cables use copper conductors in 28AWG or 30AWG configurations according to the specific breakout design.
The 400G DAC platform provides high-bandwidth connectivity for next-generation data center and computing network environments.
The product family supports QSFP112, OSFP112, OSFP56, and QSFP-DD interfaces for different equipment platforms.
The 400G DAC uses PAM4 signaling to achieve high-speed transmission across its electrical channels.
Depending on the interface, 400G transmission can be implemented through multiple high-speed electrical channels to support the required aggregate bandwidth.
Selected configurations connect one 400G interface with two 200G interfaces for mixed-speed network architectures.
Breakout configurations are available for connecting 400G equipment with multiple 100G ports in high-density network deployments.
The product family also includes a 400G to 8x50G configuration for specific high-density network architectures.
The cable is optimized for very short connections, with product configurations covering 0.5m to 3m.
400G DAC can provide short-distance connections between high-performance computing equipment and switching infrastructure in AI data centers.
Short DAC assemblies can connect GPU servers and high-speed switches where the physical distance falls within the supported copper range.
400G DAC configurations are designed for high-speed InfiniBand environments, including connections used in accelerated computing and cluster infrastructures.
The cable can be deployed between compatible 400G switches for high-bandwidth intra-rack and nearby rack interconnection.
High-performance computing clusters can use 400G DAC for low-latency connections between compute nodes and high-speed network switches.
QSFP-DD-based configurations provide a direct copper option for compatible 400GbE data center equipment.
400G-to-200G, 400G-to-100G, and 400G-to-50G configurations help connect different port speeds within high-density network architectures.
The compact cable lengths are suitable for connecting equipment installed within the same rack or in closely positioned racks.
The 400G DAC is optimized for applications where equipment is close enough to use a direct copper interconnect instead of an optical solution.
The passive DAC architecture does not require optical transmission components, helping minimize power consumption on very short connections.
The direct electrical transmission path is suitable for latency-sensitive AI, HPC, and high-performance networking environments.
QSFP112, OSFP112, OSFP56, and QSFP-DD configurations provide flexibility when selecting DAC cables for different 400G platforms.
Multiple breakout architectures allow a 400G port to connect with lower-speed interfaces according to the network topology.
The 400G DAC portfolio covers both high-performance InfiniBand environments and compatible Ethernet data center applications.
C-LIGHT states that its 400G DAC products are compatible with switches from more than 100 brands.
C-LIGHT provides product testing, compatibility support, customized cable configurations, technical guidance, and after-sales services.
A 400G DAC is a direct attach copper cable designed to provide 400Gbps connectivity over very short distances without requiring optical transceiver modules.
C-LIGHT provides 400G DAC configurations based on QSFP112, OSFP112, OSFP56, and QSFP-DD interfaces.
The listed 400G DAC configurations cover approximately 0.5m to 3m, while selected QSFP112 and OSFP112 models support 0.5m to 2m.
Yes. Several configurations support 400G-to-2x200G connections using QSFP112, OSFP112, QSFP-DD, OSFP56, or QSFP56 interfaces depending on the model.
Yes. C-LIGHT lists 400G-to-4x100G breakout configurations for selected QSFP-DD and OSFP56 platforms.
Yes. The product portfolio includes a 400G QSFP-DD to 8x50G SFP56 configuration.
The 400G DAC product family uses copper cable, with 28AWG and 30AWG options depending on the specific connector and breakout configuration.
Typical applications include AI data centers, GPU clusters, InfiniBand networks, enterprise data centers, high-performance computing systems, and short-distance switch interconnections.
C-LIGHT 400G DAC direct attach copper cables provide a high-bandwidth and low-power interconnect solution for short-distance data center, AI, HPC, InfiniBand, and Ethernet applications. With support for QSFP112, OSFP112, OSFP56, and QSFP-DD platforms, the portfolio covers direct 400G connections as well as 400G-to-200G, 400G-to-100G, and 400G-to-50G breakout architectures. The 0.5m to 3m cable range, PAM4 signaling, copper construction, and multiple interface choices make the 400G DAC series well suited to dense rack-level and adjacent-equipment interconnects.
Contact Us●100% of products pass initial test, final test and factory inspection.
●3-step quality control management process.
●100% complete implementation of customer order quality requirements.
●100% guarantee of customer product data information security.
Please contact us to download the certification certificate.
Please Note: Installing a third party transceiver does not void your network equipment warranty. Network equipment manufacturers all have guidelines stating that warranty support on their products will not be affected.
Get expert advice quickly,Meet your requirements in all aspects
Phone：+86 132 6656 7067
Email : sales@c-light.com
Contact Us
Technical Support
