e.g. With the BCM4318 on the Acer Aspire 5020 series:
ndiswrapper: Light blinks on when transmitting
-bcm43xx/b43: Solid light, blinks off when transmitting
+b43: Solid light, blinks off when transmitting
Wireless radio control is unconditionally enabled - all Acer laptops that support
acer-wmi come with built-in wireless. However, should you feel so inclined to