21:24:31 985	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
21:26:15 241	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
21:26:17 242	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
21:26:18 643	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
21:26:42 937	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
