17:36:55 758	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
17:42:48 696	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
17:45:22 554	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
17:49:03 473	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
17:55:41 163	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
17:57:05 648	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
