Easy to turn your PC into a music studio, start by connecting a music keyboard to your computer with the supplied USB MIDI Cable. and high quality. Just connect to a computer USB socket for automatic installation of the driver.Supports Windows XP, Vista Win7 and OS X operating systemsLED indicate on,MIDI in signal and MIDI out signal. USB powered and Class Compliant for true plug & play.Make Music recording by connecting a music keyboard to your computer with the USB MIDI cable with input/output.How to use:1. Connect the "up" to the MIDI "OUT" jack of a MIDI keyboardCable (or MIDI device).2. Connect the "OUT" to the MIDI "IN" socket of a MIDI keyboardCable (Of MIDI device).3. Plug the USB cable into a free USB port on the computer,The red LED is lit to show the supply.4. Open up your music software program, such as ,Sonar, MIDI connections, etc.5. Set the music to MIDI inAnd MIDI-out devices "USB Audio Device".6Your USB MIDI interface is now for use.Net weight: about 100gLength: about 2 metersPacking size: 14x95x2cmCable length: 2mMaterial:Tinned copper wirecolour:BlackPackage Contents:1 x ConverterOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.