15:18:37 609	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
15:18:37 847	Error:EnumerateHub-->CreateFile failed,err=0x2
15:23:44 649	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
15:23:44 909	Error:EnumerateHub-->CreateFile failed,err=0x2
17:42:59 731	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
17:42:59 958	Error:EnumerateHub-->CreateFile failed,err=0x2
