This Cisco® QSFP-4SFP10G-CU3M to Extreme Networks® 10305 dual OEM compatible 40GBase-CU QSFP+ to 4xSFP+ passive TAA (Trade Acts Agreement) compliant direct attach cable has a maximum reach of 3.0m (9.84ft). It is 100% Cisco® to Extreme Networks® 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 Extreme Networks®'s indvidual cables and is built to meet or exceed Cisco® and Extreme Networks®'s specifications, and comply with MSA (Multi-Source Agreement) standards. All of our dual OEM cables are Trade Agreements Act (TAA) compliant. We stand behind the quality of our products and proudly offer a limited lifetime warranty.