SumeragiSubaru,   When the adapter is turned off, it should not ne transmitting a signal.   Are you shutting down the computer or letting it sleep/hibernate? Sleep/hibernate would still use power to remember everything for quick access. Shutdown would use enough power for maybe the systems clock.     Rick
Hello, I have one question about Wifi adapter on my NB Is there some possibility that wifi adapter is still transmitting packets, data or some "hidden" signal although I switch it off? There is still battery plugged into notebook, so some energy could be used to transmit some signal. Some device is draining battery energy because if I charge battery then NB lays without any action and then I charge it again, charging control switch on. So I suspect wifi adapter thaks for answers
wi-fi adapter still transmitting?