How to Use: 1. Connect the cable marked "IN" to the MIDI "OUT" jack of your MIDI keyboard (or MIDI device) 2. Connect the cable labeled "OUT" to the MIDI "IN" jack of your MIDI keyboard (or MIDI device) 3. Plug the USB cable into any free USB port on your computer and the red LED will light up to indicate it is receiving power. 4. Open your music software program such as Sonar, MIDI Connections, etc. 5. Set the music program MIDI In and MIDI Out devices to "USB Audio Device" 6. Your USB to MIDI interface can be used now 7. To avoid potential problems, it is recommended that this interface is always connected to the same USB that was initially installed to prevent multiple driver installations. Specification: Item Type: MIDI to USB Cable Material: ABS Plug: MIDI to USB Line Length: Approx. 2 Meters / 2.2yd ( Manual Measurement, Slight Error May Exist ) Channels: MIDI 1 in 1 Out, 16 Input Channels, 16 Output Channels LED Indicator: Indicating Power, Input Signal and Output Signal. Package List: 1 x MIDI to USB Cable 1 x User Manual