These are standard ribbon cables to connect your Eurorack modules to your power distribution system. Each cable has a 16-pin IDC connector at one end to connect to most distribution systems, and a 10-pin connector at the other end to fit your module. These cables have a total length of 20cm, with strain relief bar included to ruggedize them and ensure they don't get damaged when unplugging.

For a typical analog Eurorack module, three connections need to be made between the module and the power distribution system: +12V/GND/-12V. To minimize the cable's inductance, each power line (+12V/-12V) has two separate wires in parallel, and the ground connection has six, with a total of 10 connections per header. Power distribution systems typically allow for three additional connections to be made: CV/GATE/+5V. In a similar fashion, these each require two connections, with 16 total connections per header.

These cables only include connections for +12V/GND/-12V, and thus will only be suitable for modules that do not require +5V.