09:11:37 825	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
10:48:44 788	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
10:48:47 960	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
10:53:11 483	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
14:39:12 213	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
