11:59:39 676	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
12:00:10 543	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
14:10:57 733	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
18:21:08 477	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
18:39:36 400	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
18:39:40 319	Error:EnumerateHubPorts-->DeviceIoControl failed,err=0x48f
