bluetooth keyboard

They keyboard still transmits a bluetooth signal when your computer is off as it is able to pair with other computers.

 

zoran, if you don't want Bluetooth, then buy a USB keyboard. There are many companies that still make these, and even some that make Apple versions. A quick search is bound to bring up some results.

That said, most Bluetooth peripherals will have an on/off switch to help conserve battery life. I know with the Magic Mouse you can turn it off via a switch on the bottom. It also goes to sleep when not used for a while (another battery life conservation feature), but will "wake up" and start transmitting again as soon as I click it.

I don't have an Apple Bluetooth keyboard so I can't comment on how it powers down/sleeps/etc., but again, a search might bring up more information.

 

The keyboard is still on but in a very low power mode. If you want to completely turn it off, you can use the power switch on the bottom of the keyboard (old model) or on the right side (aluminum model).