The Miditech USB MIDI HOST is a very convenient USB-MIDI conversion box that allows you to connect MIDI devices with a non-MIDI keyboard, MIDI controller, MIDI drum pad, etc. You can connect the included USB cable to the USB port such as MIDI keyboard, and use the MIDI connector to connect your MIDI device to interact MIDI signals. *Specifications: Terminal: USB terminal (A-type) x 1, MIDI input x 1, MIDI output x 1, Mini USB terminal x 1. Size: 4.7 x 2.4 x 1.4 inches (11.9 x 6 x 3.5 cm). Weight: 2.5 lbs (0.16 kg). Accessories: USB cable x 1, Japanese instruction manual (English language not guaranteed).