The Cardas USB - Serial Buss cable is designed with the Cardas Clear technology. Clear is the geometry of the Golden Section, but highly refined using state of the art dielectrics and metallurgy. Clear is the vision of perfect geometry. The metallurgical advancements and metal testing techniques that have evolved from this project are finding applications far beyond anything ever imagined. Insights into the basic conductor dielectric relationship have lead to a new frontier of understanding and an associated patent, but it is the dramatic silencing of the cables themselves and the completely unimaginable improvement in depth and clarity of sound that was the real reward.
USB terminations

Lengths beyond 5M are not supported by USB specification