Use the cables included in this pack to plug into your computer to play your keyboard. Containing a USB Cable (from keyboard to computer), to connect software such as Garageband, Mixcraft and Sebelius & more! Use the 3.5mm to 3.5mm cable to connect your smartphone, MP3 Player, or tablet to your keyboard and play along to songs in your music library. The Pack also includes a 3.5mm Stereo Mini-Jack to 2 x 6.5mm (1/4”) jack cable, and a non-slip grip mat (so your phone doesn't slide off the keyboard!).