13:33:47 536	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
14:34:13 798	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
14:34:16 973	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
16:22:14 894	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
19:04:06 146	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
20:16:57 725	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
20:17:01 239	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
