Appendix A Computer connection types

Lurking at the back of most computers or hidden beneath a front flap are a series of connections used to attach external devices to your machine:

  • •    USB is the standard used for attaching most cameras, scanners and printers.
  • •    Firewire is a faster scanner and camera connection than USB.
  • •    Screen/video port connects the computer to the screen.
  • •    Mouse port is color coded to match the mouse plug.
  • •    Keyboard connects to the computer using a similar color-coded plug to the mouse.
  • •    SCSI ports are sometimes used to connect scanners and external hard drives.
  • •    Printer or parallel port connections are not used as much as they used to be. Most printers are now connected via USB.

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