Thank you very much for viewing. This is the start switch for Neptune voice synthesis. It comes with the connector at the base. Please note that the operation has not been confirmed. Also, please understand that we cannot answer questions regarding wiring, etc. Some unique numbers have been image-edited. This item is being sold to organize my collection. We do not guarantee the operation in its current state. We cannot accept returns or refunds even if there are quality issues. There are scratches and stains. Please refrain from purchasing if you are looking for a pristine item or are overly concerned about condition. Please understand that this is a used/surplus item before purchasing. Also, please refrain from excessive price negotiations. Shipping will be via Rakuraku Mercari. Shipping may be delayed due to work commitments. Thank you for your understanding. Please let me know if you have any other questions. If you would like to purchase multiple items currently listed, please let me know. A discount of around the shipping cost is possible. However, we cannot negotiate by specifying a price. Thank you for your consideration.