10:59:54 761	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
11:12:19 623	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
14:53:41 945	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
17:46:06 357	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
19:23:39 915	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
