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

### - u -

- UID : IFsObjInfo
- uninitialize() : IInternalSessionControl
- uninstall() : IExtPackManager
- unit : IPerformanceMetric
- unlock() : IFramebuffer
- unlockMachine() : ISession
- unlockMedia() : IInternalMachineControl
- unlockRead() : IMedium
- unlockWrite() : IMedium
- unmountMedium() : IMachine
- unregister() : IMachine
- unregisterListener() : IEventSource
- update() : IVFSExplorer
- updateGuestAdditions() : IGuest
- updateMachineState() : IInternalSessionControl
- updateState() : IInternalMachineControl
- upperIP : IDHCPServer
- usable : IExtPackBase
- USBController : IMachine
- USBDeviceFilters : IHost
- USBDevices : IConsole , IHost
- USBStandard : IUSBController
- useHostClipboard : IConsole
- useHostIOCache : IStorageController
- user : IVRDEServerInfo , IGuestSession
- userFlags : IFsObjInfo
- userName : IFsObjInfo
- usesGuestVRAM : IFramebuffer
- UTCTime : IHost