20:54:11 000	Error:EnumerateHubPorts-->CreateFile failed,err=0x2
20:54:11 267	Error:EnumerateHubPorts-->CreateFile failed,err=0x2
20:54:11 491	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
20:54:11 722	Error:EnumerateHub-->CreateFile failed,err=0x2
20:54:36 602	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
20:54:38 035	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
20:55:29 164	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
20:55:36 721	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
