| A | B |
|---|
| CD-ROM | optical disc drives can read, write to optical CD discs |
| DVD-ROM | optical disc drives can read, write to optical DVD discs |
| power button | used to power the computer on and off |
| audio ports | connect speakers, microphones and headsets |
| USB ports | used to connect almost any type of device, including mice, keyboards, printers, digital cameras and more. |
| HDMI | High-Definition Multimedia Interface |
| expansion cards | circuit board that can be inserted in a computer to give extra facilities or memory |
| FireWire port | high-speed communications and isochronous real-time data transfer |
| peripherals | devices plugged into the extra ports on your computer |
| Microphones | used to record sound or to communicate with another computer user |
| synchronize (or sync) | automatically keeps your data up-to-date |
