09:42:45 487	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
13:36:15 984	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
15:20:46 533	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
16:58:41 111	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
17:12:27 785	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
17:49:09 409	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
