Direct Attach Copper (DAC) cables are high-performance twinax copper assemblies designed for ultra-short-reach interconnections (up to 7m) in data centers. Utilizing differential signal transmission technology, DACs provide a cost-effective, "zero-latency" alternative to optical transceivers for ToR (Top-of-Rack) and server-to-switch links. UnitekFiber, a professional DAC cable manufacturer, provides a comprehensive range of customized 10G SFP+, 25G SFP28, 40G QSFP+, and 100G QSFP28 DAC trunk and breakout cables tailored for high-density computing environments.
Direct attach copper cable (DAC) is a high-speed cable used to connect devices within a data center. It consists of a twinaxial copper cable with optical modules such as SFP+, SFP28, QSFP+, QSFP56 or QSFP28 on both ends, which can be connected to devices such as switches. DAC cable integrates optical modules and optical cables to avoid the possibility of optical ports being contaminated to improve reliability. High-speed DAC cables are usually used for short-distance data transmission, such as within a server rack or between adjacent racks. UnitekFiber not only provides 40G/100G DAC trunk cable, but also breakout DAC cable, which is connected one port to up to 4 other ports, such as 40G-4*10G breakout DAC cable, 100G-4*25G breakout DAC cable. Learn the difference between AOC cable and DAC cable.
DAC cables are designed to integrate optical modules and optical cables, which is a durable structure and direct connection design help improve the stability of network connections and minimize the risk of signal loss or interruption. DAC cable could be hot-swappable, which simplifies the network setup process, reduces complexity, and simplifies connection configuration. DAC cable will provide simpler installation, maintenance, and upgrades, thereby improving the overall flexibility of network infrastructure.
With the direct data connection provided by DAC cable, data can be transmitted at extremely high speeds to meet the needs of bandwidth-intensive applications and services. UnitekFiber’s DAC cable offers a high-speed data transmission capabilities, supporting various data rates like 10Gbps, 25Gbps, 40Gbps, and 100Gbps. DAC cables enable low-latency and high-bandwidth connectivity within short distances, depending on the copper cable length specification (usually no more than 10 meters). The short reach limitation makes DAC cables suitable for interconnecting devices within the same rack or adjacent racks in a data center. Learn more about the applications of AOC cables and DAC cables in data centers.
In the rapidly evolving landscape of AI supercomputing and Storage Area Networks (SAN), DAC cables remain the industry standard for short-range connectivity due to their unparalleled reliability and energy efficiency.
Energy Efficiency: Unlike Active Optical Cables (AOC), passive DAC cables consume near-zero power, significantly reducing the total electricity and cooling overhead of your data center.
Low Latency Architecture: The direct copper path eliminates the need for electro-optical conversion, providing the lowest possible latency for high-frequency trading and real-time data processing.
Massive Portfolio: We offer a serial of high-bandwidth solutions, including:
Trunk DAC Cables: 25G, 40G, 100G, and next-gen 400G configurations.
Breakout DAC Cables: Highly flexible 40G to 4×10G and 100G to 4×25G assemblies for efficient port migration.
Compatibility Hardening: Our cables are pre-coded to ensure 100% "plug-and-play" compatibility with major OEM brands like Cisco, Arista, and Mellanox.
UnitekFiber is a trusted and reputable supplier specializing in providing a wide range of fiber optic product for various networking and data communication applications. Whether you require DAC cable, AOC cable or transceiver module for data center. UnitekFiber has got you covered. For any inquiries or further information, please don't hesitate to reach out to us at sales@unitekfiber.com.
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