This Cisco QSFP-4SFP10G-CU5M to Dell 332-1666 dual OEM compatible 40GBase-CU QSFP+ to 4xSFP+ passive TAA (Trade Acts Agreement) compliant direct attach cable has a maximum reach of 5.0m (16.4ft). 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.