I have noticed some strange activity from the U1 when it is powered down. I assume the power LED should remain a dim red when powered down in and remains in a standby state. But today I have noticed that it intermittently changes to bright blue as if it has been powered on, pulses briefly and after a minute or two, will return to it's dim red. I turned the TV on during one of these moments to see if it had powered on but it hadn't and I also touched the connected usb drive to see if it had...
Active Power Light when no activity.
Active Power Light when no activity.