Mellanox's hybrid QSFP+ to 4x SFP+ passive copper cables are 40Gbps to 10Gbps cable assemblies. The cables are compliant with SFF-8431 and SFF-8436 specifi cations and provide connectivity between devices using QSFP+ port on one end and multiple SFP+ ports on the other end. The cables use state-ofthe- art signal processing technology to fi ll the expanding need for cost effective data center interconnects. Mellanox's unique quality passive copper cable solutions provide power-effi cient replacement for active power connectivity such as fi bre optic cables. The QSFP+ to 4x SFP+ cables provide 40GbE systems the ability to connect to 10GbE switches or adapter cards. Optimizing systems to operate with Mellanox's hybrid QSFP+ to 4x SFP+ passive copper cables signifi cantly reduce power consumption and enlarge the connectivity opportunities of the system. Rigorous cable production testing ensures best out-of-the-box installation experience, performance and durability.