This Mellanox MC2609130-002 to Cisco SFP-H10GB-CU2M dual OEM compatible 40GBase-CU QSFP+ to 4xSFP+ passive TAA (Trade Acts Agreement) compliant direct attach cable has a maximum reach of 2.0m (6.6ft). It is 100% Mellanox to Cisco 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 Mellanox and Cisco's individual cables and is built to meet or exceed Mellanox and Cisco'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.