11:07:05 810	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
11:07:09 400	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
15:29:47 656	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
16:23:55 964	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
16:23:59 864	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
