well, it could be just a power light meaning that the device has power, but is turned off.
Kind of like the PS2 and how the red light is always on, which means standby or off, but the light just stays on.
A lot of devices maintain a small level of power, and have a light on, but are in fact turned off.
My eMachines desktop has a light in the front, which is blue, and it only turns on when the computer shuts off to tell me that there is still power going to the machine.
Maybe its jsut something that is there, and cant be changed.
is this light on when the computer is on ? Or just when the computer is shut off ?