Product introduction      MIDI-to-Bluetooth&USB adapter , with MIDI-to-USB cable function, It can convert the circular MIDI interface of electronic musical instrument into a USB interface;      At the same time, it has the function of MIDI to Bluetooth, which can be connected to this product with a mobile phone or tablet. This product is compatible with commonly used APP software on the market. This product is compatible with Windows, Mac, iOS, Android and other systems.      Product parameters      Model :MTU-20      Overall length :2 meters      Net weight: 110g      USB plug: Standard full-speed USB-MIDI plug      MIDI plug: One-in and one-out 16-channel MIDI plug for high-performance FTP processing      Indicator light:USB work indicator light, Bluetooth work indicator light, MIDI output/output indicator light      Bluetooth version: Bluetooth low energy 4.2      Support system: Windows, Mac, iOS, Android      Compatible with APP (some of them)      Product appearance            & 10102;MIDI plug, connect to the instrument, plug IN connects to the OUT jack of the instrument, plug OUT connects to the IN jack of the instrument      & 10103;USB connector, connect to computer, mobile phone or tablet and other devices with USB function      & 10104; USB indicator light, after the USB connection, the indicator light is always on; the Bluetooth indicator light, flashing means that the Bluetooth is not connected, and always on means that the Bluetooth connection is successful      & 10105;MIDI indicator, when there is data on the plug IN/OUT, the corresponding IN/OUT indicator will flash.      Product USE      1. MIDI to USB function      No need to install the driver, plug and play: insert the USB plug into the computer, the USB indicator lights up, indicating that the connection is successful;      Connect the MIDI-IN plug to the MIDI-OUT interface of the electronic musical instrument, and connect the MIDI-OUT plug to the MIDI-IN interface of the electronic musical instrument to use.      2. MIDI to Bluetooth function      This product can use the Bluetooth function while using the USB function; if you only need to use the Bluetooth function alone, you only need to use a 5V power charger or mobile power supply to power the product.      3. Steps to use Bluetooth      Use APP to connect to this product on iPhone/iPad/iPod Touch. Take Garageband of IOS as an example: