Premium Direct Attach Cable Supplier
High-Speed Copper Interconnects
Factory-terminated DAC assemblies for data center and telecom high-speed links – 10G to 1.6T
Direct Attach Cables are pre-terminated high-speed twinax copper cables with integrated transceivers. Unlike discrete transceivers plus patch cords, DACs consume near-zero power and generate almost no heat, making them ideal for short-range (1–5 m) in-rack links. Passive DACs require no external power and offer very high reliability at very low cost, while Active DACs include embedded retimers to extend reach up to ~9 m for inter-rack connections
As a professional Direct Attach Cables (DAC) supplier, Our Direct Attach Cables (DAC) represent the ideal solution for short-distance, high-speed data transmission in modern networking environments. As a leading manufacturer, we’ve engineered these twinax copper cables to address the critical connectivity challenges faced by data center operators and network engineers. Each DAC cable features precision-manufactured connectors and high-quality shielded twinaxial copper, delivering exceptional signal integrity while significantly reducing power consumption and total ownership costs compared to optical alternatives. Our DACs maintain consistent performance under demanding conditions, ensuring reliable connectivity for your critical infrastructure.
Plug-and-play design eliminates the need for separate transceivers, reducing costs by up to 70%
Premium shielded twinax construction ensures superior signal integrity at distances up to 7 meters
Available in passive and active configurations to suit various distance and performance requirements
100% tested major equipment manufacturers（Cisco/Huawei） compatible for reliable operation
50% lower power consumption compared to optical solutions, reducing operational costs
Factory-terminated and tested to ensure consistent performance and reliability
Customizable lengths and connector combinations to optimize cable management
Passive Direct Attach Copper Twinax Cable,Compatible with Cisco, Huawei, H3C, ZTE, etc.
1/10/25G
SFP/SFP+/SFP28
Passive/Active DAC
Direct Attach Cable
custom
Passive Direct Attach
Copper TwinaxCable,compatible withCisco, Huawei, H3C, ZTE
etc.
40/50/56G
SFP56/QSFP+
Passive/Active DAC
Direct Attach Cable
custom
Compatible with Cisco, Huawei, H3C, ZTE, etc.
100G QSFP28/SFP-DD/DSFP/SFP112
200G QSFP-DD/QSFP56
Passive/Active DAC
Direct Attach Cable
custom
Compatible with Cisco, Huawei, H3C, ZTE, etc.
400G OSFP/QSFP112/QSFP-DD
800G/1.6T OSFP/QSFP-DD
Passive/Active DAC
Direct Attach Cable
custom
Passive Copper DACs
Our cost-effective solution for connections under 5 meters, these cables require no additional power and offer exceptional reliability for rack-level connections. With data rates from 10G to 100G, these cables provide an ideal balance of performance and value for standard deployments.
Active Copper DACs
Designed for extended reach applications up to 7 meters, our active DACs incorporate signal conditioning technology to maintain signal integrity over longer distances. These cables support data rates up to 400G while compensating for channel loss, making them perfect for cross-rack connections in larger facilities.
Breakout DACs
Our specialized solution for connectivity between different interface types, supporting configurations like 40G to 4×10G or 100G to 4×25G. These cables enable flexible network design and simplified migration paths when upgrading infrastructure.
DAC Customization & OEM Services
As a professional Direct Attach Cables supplier, we support customization and can quickly respond to your needs with a factory covering over 10,000 square meters.
Competitive Advantages Table
- Proprietary multi-layer shielding
- multi-stage testing with eye-pattern analysis
- Custom lengths (0.1 m increments)
- Full compatibility testing with major brands
- 24/7 engineering support with <4-hr response
- + Extended temperature range (-20°C to +85°C)
Competitive Advantages Table
- Basic shielding with standard conductor layout
- Batch testing with basic electrical verification
- Limited standard length options
- Limited testing with select vendors
- Limited business hours support
- Standard temperature range (0°C to +70°C)
Direct Attach Cable(DACA) OEM options
Professional customization service, can optimize parameter design according to specific application environment
Conductor & Electrical
- Supports 24–30 AWG, OFC or silver-plated copper; 100Ω ±5%; length-optimized impedance/attenuation and customizable pinout compatibility
Passive vs Active Options
- Passive DAC: low-latency, cost-effective for short reach;
- Active DAC (with retimers/amplifiers): extends reach and SI for 100G+, customizable power and thermal specs
Shielding & EMI
- Foil+braid multi-layer shielding (≥85% available), optional drain wire/grounding and ESD suppression for high-EMI/industrial sites
Connector & Contact Plating
- Supports SFP/SFP28/QSFP/QSFP-DD/OSFP mix, 30–50 µin gold plating for low contact resistance and long life
Jacket & Flammability
- Optional LSZH / PVC / PE / PUR with CM/CMP/OFNR, UL, IEC compliance; outdoor/oil/wear treatments available
Serialization & EEPROM
- Barcode/QR/SN labeling and EEPROM programming (vendor ID/model/batch/customer fields) for traceability
Performance Metrics：
- Signal Integrity: <10^-15 Bit Error Rate (BER), exceeding industry standards
- Insertion Loss: Up to 35% lower than competitive offerings at equivalent lengths
- Crosstalk Suppression: Advanced shielding provides 20dB better isolation than industry average
- Latency: Sub-0.1ms performance, 15% faster than typical optical solutions
Compatibility Information:
- Fully compatible with equipment from Cisco, Juniper, Arista, Dell, HPE, Huawei, and other major manufacturers
- Meets or exceeds IEEE 802.3by, 802.3bm, 802.3bs specifications
- Supports all standard protocols including Ethernet, Fibre Channel, InfiniBand
- Compatible with all major switch and server platforms using standard SFP/QSFP form factors
Regulatory Compliance:
- IEEE 802.3 standards compliance for all supported speeds
- SFF-8431, SFF-8472, SFF-8636 MSA compliance
- RoHS and REACH environmental compliance
- UL/CSA/TUV safety certifications
- CE/FCC/VCCI EMI/EMC certification
- ISO 9001:2015 manufacturing certification
Technical Specifications
Our Direct Attach Cables deliver unmatched total value by combining superior signal performance with significant cost advantages, reducing both acquisition and operational expenses while enhancing network reliability and simplifying infrastructure management—ultimately providing the lowest total cost of ownership in high-performance data center connectivity.
Integration capabilities
Our Direct Attach Cables are engineered for seamless integration in heterogeneous networks. Each undergoes extensive interoperability testing with equipment from major manufacturers like Cisco, Juniper, Arista, Dell, HPE, etc. Our proprietary connector design adapts to vendor implementation variations for reliable connections in mixed-vendor environments. We provide compatibility matrices, configuration recommendations, and specialized solutions for complex scenarios (e.g., different interface generations, mixed speeds). The cables support hot-swappable installation, minimizing disruption in live networks.
Global Technical Support
Certification
Request Custom Quote Now
Ready to optimize your data center connectivity? Contact our engineering team today for a personalized consultation to determine the ideal Direct Attach Cable configuration for your specific network requirements and receive a customized quotation within 24 hours.
Implementation timeline:
Requirements analysis and design: 3-5 working days
Product customization and testing: 2-3 weeks (1 week for standard models)
Deployment and verification: 1-2 working days
Total: 3-5 weeks
Requirements analysis and design: 1-2 weeks
Product customization and testing: 3-4 weeks
Batch deployment and verification: 3-5 working days
Total: 5-7 weeks
Requirements analysis and network assessment: 2-3 weeks
Proof of concept (PoC): 2 weeks
Product customization and batcah testing: 4-6 weeks
Phase deployment and verification: 2-3 weeks
Total: 10-14 weeks
Quality and reliability
Every Direct Attach Cable we manufacture undergoes a rigorous six-stage quality control process to ensure exceptional reliability. The process begins with incoming inspection of raw materials, where copper conductivity, shielding effectiveness, and connector plating quality are verified against strict specifications. During assembly, our automated precision manufacturing system maintains consistent production quality with real-time monitoring of crimping pressure, alignment, and assembly parameters. Each completed cable then undergoes comprehensive electrical testing including impedance matching, crosstalk measurement, and signal integrity analysis using state-of-the-art network analyzers. Environmental stress screening subjects sample cables from each batch to temperature cycling, mechanical stress, and accelerated aging. Before shipping, every cable receives final performance verification at rated data speeds with bit error rate testing under full load conditions. This comprehensive approach results in a defect rate below 0.1%, significantly outperforming industry averages.
Durability
”MTBF
Operating lifetime ≥ 10 years (under specified conditions).
Continuous operation −20°C to +70°C; humidity 5%–95% non-condensing.
Warranty
5-year comprehensive warranty covering manufacturing defects.
Advanced replacement program with next-business-day (NBD) shipping.
Performance & coverage guarantee: ensures specified data rates/BER; covers connector failure, signal degradation, and cable damage under normal use.
Support Packages
Standard: business-hours technical assistance; 48-hour response.
Premium: 24/7 technical assistance, advanced replacement (NBD); 4-hour response.
Enterprise: dedicated technical account manager, on-site spares program, and proactive monitoring.
Modern state-of-the-art factory
offices worldwide
clean and intelligent workshop
Professional staff
Customer Cases
Our optical module solutions are implemented using a systematic process to ensure smooth deployment and optimal performance:
Global Cloud Provider
A leading cloud services provider deployed over 10,000 of our Active Direct Attach Cables in their Asia-Pacific data centers, replacing a mix of optical and lower-quality copper interconnects. The implementation reduced power consumption by 45% while improving network reliability. Mean time between failures increased by 300%, while total connectivity costs decreased by 32%. The standardized solution also simplified inventory management and reduced installation time by 40%.
Financial Trading Platform
A high-frequency trading company implemented our ultra-low latency DAC solution to connect their trading servers to exchange access points. The measured latency reduction of 0.4 milliseconds provided a crucial competitive advantage in transaction execution. Since implementation two years ago, they have experienced zero cable-related failures across 1,200 critical connections, while saving approximately $450,000 in initial capital expenditure compared to optical alternatives.
Research Computing Center
A university supercomputing facility upgraded their cluster interconnect network using our custom-length, high-performance DACs. The solution eliminated cable management issues caused by excess cable loops while providing the bandwidth necessary for advanced simulation workloads. Power consumption for interconnects decreased by 62%, contributing to improved cooling efficiency and reduced operational costs of approximately $75,000 annually.
Why Our Clients Love Us
We not only provide high-performance optical module products, but also provide complete optical interconnect solutions. Through industry-leading customization capabilities, strict quality control and full life cycle support services, we help customers build more reliable, efficient and scalable network infrastructure, reduce total cost of ownership and accelerate business innovation.
Procurement Process
We provide a flexible and efficient procurement process to meet the needs of different customers:
Standard product procurement
Submit an inquiry: Submit product requirements through the official website form, email or phone
Get a quote: The sales team will provide a detailed quotation within 24 hours
Confirm the order: Submit a formal order after confirming the configuration, price and delivery time
Payment processing: Support multiple payment methods, including letters of credit, wire transfers and corporate checks
Order tracking: Track order status in real time through the customer portal
Product delivery: Ship according to the agreed method and provide logistics tracking information
Customized product procurement
Demand consultation: The technical team assists in clarifying customized requirements and technical specifications
Feasibility assessment: The engineering team evaluates the customized solution and provides implementation suggestions
Sample development: Develop customized samples and provide testing support
Sample confirmation: Customers test and confirm that the sample performance meets the requirements
Mass production: Arrange mass production and conduct strict quality control
Delivery and support: Product delivery and provide installation guidance and technical support
Frequently Asked Questions
Find quick answers to the most common questions about our services and solutions.
What is the difference between passive and active DAC?
Passive DACs have no electronics (ideal for very short links), whereas Active DACs include signal-repeater circuitry to reach longer distances.
What cable lengths and speeds are available?
We supply DACs from 0.5 m up to 10 m (passive) and extended lengths (active) at all standard speeds: 10G/25G/40G/50G/100G/200G and beyond.
Can you provide custom branding or cable lengths?
Yes. We offer full OEM labeling and custom lengths to match any rack layout (e.g. 2.3 m, 7.8 m, etc.).
How do your prices compare?
WOLON offers factory-direct pricing and volume discounts. Since we control manufacturing, we can beat typical reseller pricing for equivalent quality. (For a quote, contact our sales team.)
Do you offer samples and quick prototyping?
Yes – we can provide pre-production samples for testing, and our agile production can deliver prototypes in days.
How can I track the progress of my project?
We provide regular updates and have a dedicated project management portal for clients to track progress.
Do you offer support after project completion?
Yes, we offer ongoing support and maintenance services to ensure your solution remains effective.
How to monitor the health status of optical modules?
All of our optical modules support digital diagnostic monitoring (DDM) to monitor key parameters such as temperature, voltage, optical transmit power, optical receive power, and laser bias current in real time. These data can be viewed through the network device command line or management system, or integrated into a third-party monitoring platform. We also provide optical network monitoring software that supports predictive maintenance and alarm functions.
How do I contact customer service?
You can reach our customer service team via email, phone, or live chat on our website.
Contact Us
Call
+8618086647893
180 8664 7893
Address
3/F, Yunqi Technology Port, Guanggu, Hongshan District, Wuhan City, Hubei Province, China