49-key MIDI controller, easy to use with USB connection. I bought it, but I'm selling it because I only need to be able to play the piano, so I'm switching to a keyboard. The set includes the main unit and the USB cable. I highly recommend it because the keyboard has a very comfortable feel! There is no box, so it will be shipped in simple packaging. - Model Name: KEYSTATION 49 MK3 - Brand: M-AUDIO - Number of Keys: 49 keys - Function: MIDI controller - Connection Type: USB connection Thank you for looking!!