The 40G QSFP+ Direct Attach Copper (DAC) cable remains the backbone of short-range data center connectivity. As enterprises migrate from 10G to higher bandwidths, 40G DACs provide a balance of cost-efficiency and performance for Top-of-Rack (ToR) switching applications.
With the surge in AI-driven workloads and cloud computing, the demand for low-latency high-speed cabling is skyrocketing. Current trends indicate a shift toward 40G to 100G migration, where 40G DACs serve as the critical transition technology for medium-sized enterprises.
International buyers are increasingly focused on multi-vendor compatibility. Procurement teams from North America, Europe, and Southeast Asia seek 40G DAC suppliers who can provide rigorous testing reports and 100% compatibility with brands like Cisco, Arista, and Juniper.
Established in 2012 in Hong Kong as a hi-tech communication enterprise, Kocent Optec Limited is one of China's leading fiber optic termination product manufacturers and solution providers.
We are dedicated to developing and manufacturing fiber optic communication products ranging from passive to active categories for telecommunication networks, enterprise networks, and data centers. Our commitment to excellence ensures that our 40G DAC cables meet the highest industrial standards.
By leveraging our extensive experience and excellent production capacity, we magnify the outcome for our valuable customers, expanding their core competencies and helping them outperform competitors.
As a professional 40G DAC supplier, our expertise extends beyond simple assembly. Understanding the nuances of high-speed signal integrity is what sets our 40G QSFP+ to QSFP+ Passive Direct Attach Copper Cables apart. These cables consist of twinaxial copper cables terminated with QSFP+ connectors on both ends, designed for distances up to 7 meters.
We utilize high-purity silver-plated copper conductors (typically 24AWG to 30AWG) to minimize signal attenuation. This ensures that our 40G DACs maintain 4 independent channels of 10Gbps data traffic without EMI interference.
One of the primary reasons for the 40G DAC's popularity in modern data centers is its near-zero power consumption. Unlike optical transceivers that require power for laser transmission, DACs are passive components, significantly reducing the "Power Usage Effectiveness" (PUE) of data facilities.
For short-reach connections (under 5m), our wholesale 40G DAC pricelist offers a cost reduction of up to 60% compared to using two 40G transceivers and a fiber patch cord. It is the most economical solution for stackable switches.
State-of-the-art Factory
With more than 13 years of experience, we follow strictly fiber optic industry standards by using mature scientific methods to deliver your products on time and ensure that 100% products are tested and inspected before shipment.
Our main product catalog include:
• Data Center: MTP MPO Patch cord, SFP/QSFP, AOC/DAC.
• FTTA Solution: Tactical fiber optic cable, CPRI patch cord, FTTA Terminal Box.
Professional Quality Control
MTP MPO Production Line
PLC Splitter Production Line
SFP QSFP Production Line
FDB and FOSC Production Machine
KCO Fiber provides SFP, SFP+, QSFP, AOC and DAC in high quality, fully compatible with many brands of switches such as Cisco, Huawei, ZTE, H3C, Juniper, HP, TP-link, D-Link, Dell, Netgear, Ruijie, and more.
For the SFP, SFP+, QSFP, AOC and DAC: KCO Fiber provide customized solutions for all needs and specifications, such as optical design, mechanical design, PCB layout, electrical design, software & firmware design, Integrated assembly, specific labels, etc.
Our OEM service allows you to leverage your strengths, core competencies, and technology expertise to expand revenue while reducing costs. We ensure that each customized solution meets your needs while maintaining high standards of quality and performance.
According to design drawing, KCO Fiber provides ODM customization services for all types of terminal boxes, distribution frames, and patch panels.
We offer customization for Tactical CPRI Patch Cords & MTP MPO Patch Cords for any fiber type, connector, length, or color.
Customization for FTTH, Tactical, and specialized structure cables based on your specific structure ideas or requests.
By sourcing directly from our factory in China, you eliminate middleman markups. Our 40G DAC pricelist is designed to help wholesalers maintain competitive margins while offering premium quality.
Our R&D team can respond quickly to custom length requests or unique firmware requirements for specific switch compatibility, ensuring a faster time-to-market for your projects.
We maintain a robust stock of raw materials (Twinax cables and QSFP+ shells), allowing us to fulfill large-scale wholesale orders with consistent lead times even during market fluctuations.
KOCENT OPTEC
