09:46:06 120	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
09:46:10 570	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
09:46:49 533	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
09:48:46 347	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
