Some light kits for desktop computers will come with a switch to allow the user to turn the lights on or off at any time. Many newer kits do this through a switch placed inside of a PC card slot cover. Others may have a larger switch that requires the case to be modified. This typically requires that a section of the case be cut out for the switch to then be mounted into.
No matter how the switch is mounted, this step is typically optional. Most lights can be plugged directly into the inverter meaning that the lights will turn on whenever the computer is on.
