RCA connector
This board also includes a connector for a standard Super NES APU module, which is connected by wires to the next board up, which is the board which contains the MIDI and RCA connector. This audio board has many RAM chips, totaling 2 MB in size. The audio board also has many analog-to-digital converters. This board also has a 32k EPROM chip, but it is soldered to the board and could not be safely removed for investigation.