Just got my AC200P a week ago and all is well except for the constant loud drone of the power brick cooling fan. It appears to be running at a fairly high speed and never shuts off or slows down even when it isn’t charging (green light). It will run the same speed whether connected to the AC200P or disconnected. The only way to shut it up is to disconnect it from the wall AC.
It looks like a newer model than the ones I see in most of the YouTube videos. Anyone with the newer power brick have the same issue? Mine is model # T500-588A800-00.
The one thing I do like about it is that it supplies 450 watts to the AC200P.