This is a Brocade compatible 100GBase-CU QSFP28 to 4xSFP28 direct attach cable that operates over passive copper with a maximum reach of 3m It has been programmed uniquely serialized and data-traffic and application tested to ensure it is 100% compliant and functional This direct attach cable is TAA (Trade Agreements Act) compliant and is built to comply with MSA (Multi-Source Agreement) standards We stand behind the quality of our products and proudly offer a limited lifetime