09:05:03 970	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
15:37:59 395	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
15:37:59 397	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
17:56:22 768	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
18:41:58 650	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
