This is a Arista Networks® CAB-Q-4S-100G-5M compatible 100GBase-CU QSFP28 to 4xSFP28 direct attach cable that operates over passive copper with a maximum reach of 5.0m (16.4ft). It has been programmed, uniquely serialized, and data-traffic and application tested to ensure it is 100% compliant and functional. Our direct attach cables are built to comply with MSA (Multi-Source Agreement) standards. This direct attach cable is TAA (Trade Agreements Act) compliant. We stand behind the quality of our products and proudly offer a limited lifetime warranty.