100G QSFP28 Breakout DAC cable include 100G QSFP28 to 4x25G SFP28 and 100G QSFP28 to 2x 50G QSFP28 Passive Direct Attach Copper Breakout Cables. They are also known as hybrid passive copper cable or fan-out passive copper cables. The hybrid passive copper cable is suitable for very short distances links when signals breakout from one QSFP28 port to 4x 25G SFP28 ports or 2x 50G QSFP28 ports. This breakout cables offers a highly cost-effective and low-power consumption connectivity for interconnections in high-performance computing (HPC), data center, and storage networks applications. The QSFP28 Breakout DAC cables are compliant with QSFP28 MSA (Multi-Source Agreement) standard and SFF-8402 and SFF-8665 specifications. AscentOptics provides 2 types of 100G QSFP28 breakout cables length ranging from 0.5 meter to 5 meters.