11:12:50 007	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
15:38:17 065	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
15:38:17 307	Error:EnumerateHub-->DeviceIoControl failed,err=0x1f
15:38:17 528	Error:EnumerateHub-->DeviceIoControl failed,err=0x1f
15:38:37 292	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
15:43:06 560	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
15:51:48 590	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
