RA-1 ribbon adapter cable for using Analogue Systems eurorack modules with eurorack power supplies that do not include Analogue Systems sockets (Doepfer power supplies for example). The RA-1 accommodates all Analogue Systems modules that have just one power socket at the module end. A few A.S. modules (rs35 and rs95e to name two) have 2 sockets at the module end. These modules require the RA-2 ribbon adapter cable.