10:37:40 462	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
15:58:10 611	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
17:24:14 193	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
20:49:01 892	Error:EnumerateHub-->DeviceIoControl failed,err=0x1f
