100G QSFP28 to 4x25G SFP28 direct attach copper cables (DAC cable) use passive copper technology to provide reliable transport connections without the need for an additional power supply. Breakout QSFP28 DAC cables provide connectivity between 1*100G QSFP28 port and 4*25G SFP28 ports. The DAC cables provide a cost-effective solution for interconnecting equipment in telecommunication carrier's server room or data center for short distance transmission. DAC cables are easy to install, fast, and cost-effective for short distance transmission.
The 100G QSFP28 to 4x25G SFP28 Breakout Direct Attach Copper Cable (DAC) is a passive interconnect assembly that splits a single 100Gbps QSFP28 port into four discrete 25Gbps SFP28 channels. Designed for short-reach applications (up to 5m), this Twinax copper solution provides a zero-power, ultra-low latency path for high-density server racks. It is the most cost-effective hardware for migrating from legacy 10G infrastructures to high-speed 25G/100G Leaf-Spine architectures.
As the demanding of bandwidth speeds pushed to 400G, DAC cable are ideal for short interconnections. The length of 100G DAC cable depend on the transfer rates, at a maximum reach of 3M at 400Gbps data rates. Applications for a data center include between servers in a rack, between a router in a switch in a rack, or between switches in a cluster.
The 100G QSFP28 - 4*25G SFP28 DAC cable are engineered with a focus on low power consumption, delivering energy-efficient networking solutions without compromising performance. By optimizing efficiency and reducing energy usage, the branch DAC cable offer a sustainable solution. Additionally, their reliability and seamless integration capabilities ensure that can enhance network infrastructure without sacrificing efficiency. By choosing branch Direct Attach Copper Cable with low power consumption, can create a more energy-efficient and sustainable networking environment while achieving cost savings.
DAC copper cable are copper wire so there are no delays in switching copper signals to optical and then back to copper. Direct attach copper cables have the lowest latency of all short-reach cables (<8ft /3m). For services such as financial trading, edge computing, AI, AR/VR gaming, enterprise video conferencing, any reduction in latency is an advantage. DAC cables offer low-latency connectivity, ensuring that data travels quickly and efficiently between interconnected devices.
One of the main functions of DAC cables is to provide cost-effective networking solutions for short distance connections. As an alternative to optical transceivers and fiber optic cabling, 100G transceiver module DAC cable offer comparable performance at a lower cost, making them an economical choice for high-speed data transmission in limited network spaces. By eliminating the need for separate transceivers and fiber optic cabling, direct attach copper cable simplify the network setup process, reducing complexity and simplifying connection configuration. This simplicity means easier installation, maintenance and upgrades, increasing the overall agility of the network infrastructure.
The 100G to 4x25G Breakout DAC is essential for NVMe-over-Fabrics (NVMe-oF) storage arrays and High-Frequency Trading (HFT) environments where every nanosecond of latency matters. It is the backbone of the modern cloud data center.
Scale your network without blowing your budget. UnitekFiber provides custom-coded 100G Breakout DACs with a 3-year warranty and guaranteed compatibility with 100+ vendors.
Get Your Quote: sales@unitekfiber.com| Simplified 100G Migration.
Yes, you can. Unitekfiber offers customized dual compatibility solutions for direct attach cables so that you can choose compatibilities for each end individually.
DAC cables are made from shielded Twinax copper coaxial and are factory equipped with modules on either end connected to fixed ports. The modules cannot be removed from the cable. Therefore, all DAC cables are produced at a fixed length.
UnitekFiber's DAC cables includes passive direct-attach cables with speeds ranging from 10 Gbps to 400 Gbps, typically used for short-distance connections in enterprise and data centers or network equipment.
Before shipping, we have professional QC,and we will test the item strictly.
At 25Gbps per lane, the Skin Effect in copper causes rapid signal degradation. Beyond 5 meters, the signal becomes too weak for the receiver to process without active amplification (AOC).
Technically, if the 100G port supports Breakout Mode and 10G Speed, it is possible. However, the SFP28 ends are optimized for 25G. For 10G servers, we recommend using a specific 40G to 4x10G Breakout DAC.
Yes. Our QSFP28 and SFP28 modules are designed for hot-pluggable operation, allowing you to upgrade or replace links without powering down your network hardware.
This product do a well work on the data center, absolutely save the space, save the installation time and could be manage the cable better than before. Highly recommended.
This DAC cable has greatly improved our network efficiency.
Our data center was in dire need of a more efficient cabling solution, and the direct attach copper cable delivered exactly that.
Seems to be well constructed, works perfectly as expected.
The DAC cable have simplified our cable management and reduced the time required for installation and maintenance.
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