Features: 48 velocity and pressure sensitive performance pads with RGB backlit, can be assigned easily as pads, MIDI CC buttons or program change switches. 8 assignable knobs and 8 assignable sliders, each can be edited by user, very flexible to operate. 16 function buttons, providing functions like Note, Octave, After touch, Channel, Velocity, Mute, etc. With MIDI IN & MIDI OUT, USB 2.0 connection,  compatible with Win10/8/7/XP/Vista and Mac OSX, drive free and hot-plug supported. Supports power supplied by USB and DC 5V, plug and play, start your creative work at any moment. Specifications: Color: Black Material: Plastic Power Supply: DC 5V or USB 2.0 Operating System: Support for Win XP/ Vista/ Win7/ Win8/ Win10/ Mac OSX Item Size: 25.6 * 25.6 * 2cm/ 10 * 10 * 0.8in Item Weight: 870g/ 1.9lbs Package Size: 31 * 29.5 * 7cm/ 12.2 * 11.6 * 2.8in Package Weight: 1195g/ 2.6lbs Note: You need to connect the MIDI controller with software editor before usage. You can download the users' manual and the software editor for the website(www.worlde.com.cn) on the QUICK START paper. This MIDI controller hasn't sound module inside, you can't get sound by connect it  to headphones or speaker instantly. Package List: 1 * MIDI Controller 1 * USB Cable 1 * DC Power Cable 1 * 3.5mm Connection Cable