09:46:11 385	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
09:54:56 270	Error:EnumerateHub-->DeviceIoControl failed,err=0x1f
09:54:56 492	Error:EnumerateHub-->DeviceIoControl failed,err=0x1f
09:54:59 339	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
14:56:37 919	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
14:56:41 566	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
15:20:32 614	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
