10:05:38 830	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
10:55:15 948	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
12:01:59 131	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
14:19:25 175	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
