Connecting MIDI to USB can be difficult without using a MIDI processor. However, a USB interface allows you to transfer your MIDI signals directly to your computer or output. Connecting MIDI to USB requires using a MIDI to USB connector or a USB interface external hard drive. MIDI signals can be converted to audio signals with the use of the interface. You can also use MIDI devices such as keyboards, electric drums or external controllers when connecting.
Connect MIDI cable to the "MIDI Out" port on your MIDI device. Connect the "MIDI Out" cable from the MIDI device to the "MIDI In" of the USB interface, often displayed as "In A."
Connect the second MIDI cable to the "MIDI Out" on the USB interface then connect the cable to the "MIDI In" of the MIDI device.
Connect the USB cable to the USB slot on the USB interface. Connect the other end of the USB cable to the computer or an external USB slot.
Connect MIDI to USB connector to "MIDI In" port on MIDI device.
Connect the other MIDI cable to the "MIDI Out" port on your MIDI device.
Plug USB end of cable into the USB slot on your computer or another external USB slot.