Direct attach copper cable, short for DAC cable, is a kind of fixed high speed copper cable assembly.
It consists of shielded twinax copper cable with pluggble connectors on either end with varying gauges from 24 to 30AWG: The longer the distance, the higher the AWG rating should be.
It can be used to connect switches to routers or servers for short transmission distance. In addition, DAC cables are commonly available in several different categories: SFP+ DAC, XFP DAC, QSFP DAC and so on.
