09:02:27 775	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
10:31:13 666	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
16:40:03 847	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
18:31:38 239	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
