* +5V DC - needed only when the CPC's built-in supply gets overloaded
* +12V DC - needed for the [[Schneiderware V/24 interfaceInterface]] and the [[Schneiderware Analog Converter]]* -12V DC - needed for the [[Schneiderware V/24 interfaceInterface]] only
* +24V DC - not used (was intended for the EPROM Burner, but when the EPROM burner was released, it contained a 5V-to-25V converter, and thus didn't need the +24V anymore)