10:38:47 170	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
11:47:24 777	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
16:15:28 470	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
16:34:20 465	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
19:09:47 086	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
