Hello all, I just learned that my initial description is not quite correct. The issue is a "fuse" that switches off the power to a USB port when the amperage reaches a threshold. This threshold is supposedly software configurable. In our case the threshold is 150mA and the attached device draws 147mA. Because this is so close to the threshold the device randomly works or not. To re frame my original question: Is this picture valid? Is there support in Linux to adjust this threshold? If so, how? Thanks in advance Joerg -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html