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Mellanox's hybrid QSFP+ to 4x SFP+ passive copper cables are 40Gb/s to 10Gb/s cable assemblies. The cables are compliant with SFF-8431 and SFF-8436 specifications and provide connectivity between devices using QSFP+ port on one end and multiple SFP+ ports on the other end. The cables use state-of-the-art signal processing technology to fill the expanding need for cost-effective data center interconnects. Mellanox's unique quality passive copper cable solutions provide power-efficient replacement for active power connectivity such as fiber 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 significantly reduce power consumption and enlarge the connectivity opportunities of the system.