20:01:30 078	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
20:03:15 345	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
20:06:16 723	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
20:06:22 904	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
20:09:35 415	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x1f
20:16:03 460	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
20:22:00 827	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
