11:28:37 049	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
14:11:51 729	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
15:01:49 161	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
16:12:06 924	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
16:34:36 318	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
16:46:17 394	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
