10:14:09 013	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
11:51:43 690	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
14:57:49 173	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
18:32:08 186	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
