VirtualBox Main API

### - b -

- backend : IUSBDevice
- bandwidthControl : IMachine
- bandwidthGroup : IBandwidthGroupChangedEvent, IMediumAttachment, INetworkAdapter
- base : IMedium
- beginTime : IVRDEServerInfo
- birthTime : IFsObjInfo
- bitsPerPixel : IFramebuffer, IGuestScreenInfo
- blockSize : IFsInfo
- bootable : IStorageController
- bootMenuMode : IFirmwareSettings
- bootPriority : INetworkAdapter
- bridgedInterface : INetworkAdapter
- bus : IPCIAddress, IStorageController
- buttons : IGuestMouseEvent
- bytesPerLine : IFramebuffer
- bytesReceived : IVRDEServerInfo
- bytesReceivedTotal : IVRDEServerInfo
- bytesSent : IVRDEServerInfo
- bytesSentTotal : IVRDEServerInfo