10:44:23 341	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
13:38:15 197	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
14:10:35 272	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
14:22:33 501	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
