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Small form-factor pluggable plus (SFP+) direct attach copper (DAC) cables, also known as Twinax cables, are suitable for in-rack connections between servers and either the QFX5100-48S or QFX3500 devices.
The cables are hot-removable and hot-insertable. A cable consists of a cable assembly that connects directly into two SFP+ modules, one at each end of the cable. The cables use integrated duplex serial data links for bidirectional communication and are designed for data rates up to 10 Gbps.
Active DAC cables have signal amplification and equalization built into the cable assembly.