Sorry if this has already been covered, but I did try searching around without any results. Plus, I'm a newbie to Android and this forum. 
Today, I tethered my Hero to my PC to add some music to it and to charge it. I noticed that my awake time while it was tethered was 96% or so, which concerned me at first.
When tethered to a PC, is the Hero able to sleep? I know it can sleep while being charged with the wall charger, and I have checked my settings to ensure that will happen.
Thanks for your help!

Today, I tethered my Hero to my PC to add some music to it and to charge it. I noticed that my awake time while it was tethered was 96% or so, which concerned me at first.
When tethered to a PC, is the Hero able to sleep? I know it can sleep while being charged with the wall charger, and I have checked my settings to ensure that will happen.
Thanks for your help!