This Cisco QSFP-H40G-AOC15M to Mellanox MC2210310-015 dual OEM compatible 40GBase-AOC QSFP+ to QSFP+ active TAA (Trade Acts Agreement) compliant direct attach cable has a maximum reach of 15.0m (49.2ft). It is 100% Cisco to Mellanox 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 Mellanox's individual cables and is built to meet or exceed Cisco and Mellanox'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.