This Arista Networks CAB-Q-Q-4M to multiple OEM compatible 40GBase-CU QSFP+ to QSFP+ passive TAA (Trade Acts Agreement) compliant direct attach cable has a maximum reach of 4.0m (13.1ft). It is 100% Arista Networks compatible and has been programmed to allow for connection to multiple OEMs. These OEMs include Avago, D-Link, Edge-corE, F5 Networks, Finisar, Fortinet, Linksys, Mellanox, NetAPP, Zyxel and more. This cable is also 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 Arista Networks and the multiple OEM's individual cables and is built to meet or exceed Arista Networks'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.