just got a MS optical mouse with the side button web thingies
and the light never goes off even after the pc has shut down
is this normal??
Yes, that is normal. The reason is because most recent ATX motherboards
(such as my A7N8X Deluxe) have a "Power On By PS/2 Mouse" function. In
order for that function to work, constant power must be maintained to the
mouse, even when the computer is powered down.
I have all my peripherals plugged into a surge protector. When I turn off
the surge protector, the optical mouse light goes off.