09:04:24 726	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
09:18:19 258	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
09:30:55 691	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
09:30:55 930	Error:EnumerateHub-->CreateFile failed,err=0x2
10:25:01 911	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
10:55:28 474	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
10:55:28 707	Error:EnumerateHub-->CreateFile failed,err=0x2
