Direct Attach Cables (DAC)

LANMexx  DAC cables are made from twinax copper and are factory terminated with modules that provide an electrical connection directly into active equipment. The modules cannot be removed from the cable and so all DAC cables are a fixed length. This is one of the drawbacks of using DAC cables compared to using a combination of fibre cables and optical transceivers.

There are different types of high-speed DAC cables; direct and breakout, passive and active. A direct connect DAC cable will connect one port/line card to another. A breakout DAC cable will allow one port to be connected to up to 4 other ports. An active DAC cable will offer a slightly longer transmission distance than a passive DAC cable as it uses electronics within the modules at each end to boost the signals.

LANMexx DAC cables consist of a range of connector types. SFP+, SFP28, QSFP+, QSFP+ to SFP+, QSFP28 and QSFP28 Breakouts are available as well as QSFP-DD interface for 200G and 400G connections over DSR4.