1、MIDI Adapter Board: There are many similarities between the MIDI protocol and the asynchronous serial interface, so users can send MIDI event information using the microcontroller UART pins. 2、Anti Ground Loop: Provides MIDI IN and MIDI OUT connections and a MIDI THRU port, the MIDI port is light in isolation and ground loop proof. 3、Easy Installation: To install directly, connect MIDI IN/THRU to hardware RX pins and MIDI OUT to TX. 4、Premium Materials: Made of PCB, it is strong, durable, not easy to be damaged, and has a long service life. 5、Note: The RUN PGM switch allows the user to serially program board without removing the board. The three hole MIDI connectors are not soldered to the MIDI board, but these connectors are included with this product. Item Type: MIDI Adapter Board Material: PCB Used For: MIDI for shield Serial to MIDI Module Number of Pins: 24pin 1 x MIDI Adapter Board