The USB 2.0 specification is fully compatible with low-speed and full-speed USB devices and even supports the use of cables and connectors made to meet earlier versions of the specification. Version 2.0 of the specification adds another bus speed to this list: Version 1.1 of the USB specification supports two bus speeds:
Hard drives, flash memory readers, CD Read/Write drives, digital cameras, and high-end media playersĪ device that doesn’t fit into any other predefined class or one that doesn’t use the standard protocols for an existing classĭigital camcorders, webcams, digital still cameras that support video streaming Hubs provide additional attachment points for USB devices
Keyboards, mice, joysticks, drawing tablets A device in which all class-specific information is embedded in its interfaces
