This applies to the Clarett Range

The maximum length of Thunderbolt cable that can be used with a Clarett/Red Range interface is 3 meters (9.8 ft) when using a copper cable. Optical Thunderbolt cables can also be used up to 100 meters (328ft) in length. These are the maximum lengths of cable allowed by the Thunderbolt standard.

If you have any further questions please contact us here.