This Cisco® QSFP-H40G-CU2M to F5 Networks® F5-UPG-QSFP+ dual OEM compatible 40GBase-CU QSFP+ to QSFP+ passive direct attach cable has a maximum reach of 2.0m (6.6ft). It is 100% Cisco® to F5 Networks® compatible and has been programmed, uniquely serialized, 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 F5 Networks®'s individual cables and is built to meet or exceed Cisco® and F5 Networks®'s specifications. This product complies with MSA (Multi-Source Agreement) standards and is TAA (Trade Acts Agreement) compliant. We stand behind the quality of our products and proudly offer a limited lifetime warranty.