An i3BOARD is connected to a PC or laptop via a USB cable. This requires no additional power since power comes directly from the computer through the USB connection. When you turn on your computer the board automatically starts. By connecting your computer to a projector you can project the computer image onto the i3BOARD. You must be connected to your computer for the i3BOARD to work. Touch recognition (driver installed From Windows 7) can work without drivers, but we always recommend to install them.