10:46:56 876	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
10:53:49 819	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
10:56:46 456	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
10:56:52 694	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
