10:41:26 079	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
15:41:22 888	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
18:25:56 793	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
19:51:45 085	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
