100G QSFP28 to 4x25G SFP28 Breakout DAC: High-Density 25G Migration Cable
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.
Key Features of 100G DAC Cable
High-Speed Data Transmission at Short Distances
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.

Superior Energy Saving: Low Consumption of Direct Attach Copper Cable
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.

Low Latency While Using the DAC Cable
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.

Cost-Effective Networking Solution
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.
Application & Solutions
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.
Cost-Effective High-Speed Connectivity
Scale your network without blowing your budget. Op2Link provides custom-coded 100G Breakout DACs with a 3-year warranty and guaranteed compatibility with 100+ vendors.





