09:48:29 473	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
11:43:47 695	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
13:30:52 115	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
14:08:36 309	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
