20:12:11 259	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
20:18:37 962	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
20:18:38 173	Error:EnumerateHub-->DeviceIoControl failed,err=0x1f
20:18:38 384	Error:EnumerateHub-->DeviceIoControl failed,err=0x1f
20:18:38 795	Error:EnumerateHub-->CreateFile failed,err=0x2
20:24:59 410	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
