With my HTC Inspire I found that while powered off I could connect it to my computer and adb would still detect the device. I could power it on with "adb reboot" or boot straight to bootloader. While I never actually needed it, it was cool knowing I could in case my power button broke or whatever. But with the One, this doesn't seem to work. I have USB Debugging enabled, but when powered off adb won't see the device attached. So I'm curious, what's the difference in the two systems that allows one to be recognized and the other not? Is there something I can do with the One to enable this functionality?