09:16:27 104	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
09:43:48 453	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
11:50:05 794	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
17:06:21 436	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
