11:40:32 977	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
14:59:48 262	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
15:01:28 458	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
15:58:13 607	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
