The QSFP+ copper data cable system for 40 GB/s Ethernet and 40 GB/s Infiniband QDR-applications. The system, comprising a ParaLink cable and a connector plug as well as circuit boards and a casing, completes the reliable ParaLink range of products for 24 to 32 AWG applications. The copper-based solution designed by LEONI is not just raising the bar with unrivalled NEXT characteristics and self-damping, but also with its extremely small diameter which is 20 % below industrial average.