A feeder, which is used through installation in a mounting machine and which is configured to supply components that a mounting machine mounts on a printed circuit board. The feeder is a second type of feeder which is capable of performing a second aspect component supply operation, and is interchangeable with a first type of feeder which performs a first aspect component supply operation. The feeder is configured to transmit feeder information indicating that the feeder is the first type of feeder and perform the first aspect component supply operation when a request for feeder information is received from the mounting machine by a first command, and transmit feeder information indicating that the feeder is the second type of feeder and perform the second aspect component supply operation when a request for feeder information is received from the mounting machine by a second command.