14:52:09 391	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
14:54:19 712	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
15:06:28 351	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
15:06:35 832	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
