Know your gear
This is a Cisco QSFP-4SFP10G-CU5M compatible 40GBase-CU QSFP+ to 4xSFP+ 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. These direct attach cables are built to comply with MSA (Multi-Source Agreement) standards.