Here is a list of all class members with links to the classes they belong to:

### - u -

- udi : IHostDVDDrive , IHostFloppyDrive
- uninitialize() : IInternalSessionControl
- unit : IPerformanceMetric
- unlock() : IFramebuffer
- unlockRead() : IMedium
- unlockWrite() : IMedium
- unmount() : IDVDDrive , IFloppyDrive
- unregisterCallback() : IVirtualBox , IConsole
- unregisterMachine() : IVirtualBox
- update() : IVFSExplorer
- updateCompleted() : IDisplay
- updateMachineState() : IInternalSessionControl
- updateState() : IInternalMachineControl
- upperIP : IDHCPServer
- USBController : IMachine
- USBDeviceFilters : IHost
- USBDevices : IConsole , IHost
- USBStandard : IUSBController
- user : IRemoteDisplayInfo
- usesGuestVRAM : IFramebuffer
- UTCTime : IHost