For more information about USB on Macintosh computers, developers should refer to Apple Computer's Mac OS USB DDK API Reference . Information is also available on the World Wide Web, at:
http://developer.apple.com/techpubs/hardware/DeviceManagers/usb/usb.html
USB game controllers are supported by the InputSprocket component of the Apple Games Sprockets software architecture. InputSprocket software and information about the InputSprocket APIs can be found at
http://developer.apple.com/games/
Information about the standards for multi-media keys can be found in the USB HID consumer information on the World Wide Web, at:
http://www.usb.org/developers/devclass_docs.html#approved
For full specifications of the Universal Serial Bus, developers should refer to the USB Implementers Forum on the World Wide Web, at:
http://www.usb.org/developers/