Im using an ARC running the latest FW (1.0.8) and 1.5.5 Software on Linux. After ~30 minutes, the Main voltage (in my case 5V) is automatically turned off and when turning on again, the level is at 4.2V. I have the same problem with the 2.0.0 version.
Any thoughts about this? Is there some kind of setting for this or is it a bug?