I have a model M0115 keyboard (Apple Extended Keyboard) that will make a computer turn on simply by plugging it in. If I attempt to shut down the computer, it'll automatically start back up as if I'm holding down the power key.

However, while the computer is operating it functions normally. It's just this one keyboard, but I don't have any others like it to compare.

Is this normal for this type of keyboard? Or is it faulty?