This Cisco® QSFP-H40G-AOC20M to Dell® AOC-QSFP-40G-20M dual OEM compatible 40GBase-AOC QSFP+ to QSFP+ active TAA (Trade Acts Agreement) compliant direct attach cable has a maximum reach of 20.0m (65.6ft). It is 100% Cisco® to Dell® compatible and has been programmed, uniquely serialized, and data-traffic and application tested to ensure that it is compliant and functional. This direct attach cable will initialize and perform identically to Cisco® and Dell®'s individual cables and is built to meet or exceed Cisco® and Dell®'s specifications, and comply with MSA (Multi-Source Agreement) standards. We stand behind the quality of our products and proudly offer a limited lifetime warranty.