![]() ![]() If Cx states are enabled, the device may recover a short time later. For example, Cx states are not enabled, or system traffic prevents the system from leaving the C0 power state. This issue occurs when the processor is in the C0 power state for a long time. Therefore, the port that is associated with the USB device stops responding. This issue occurs because the Platform Controller Hub (PCH) cannot resolve which traffic type is a priority. The USB device has pending control and bulk traffic. The computer has a chipset from the Intel 5 Series or the Intel 3400 Series families of Intel chipsets. This issue may occur when the following conditions are true: ![]() When you use a single USB bulk storage device (for example, an iPhone) with a Windows-based computer, the device appears unresponsive. Intel Series Chipset Family USB ports stall with bulk and control traffic Symptoms
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