1-10 Introducing Your Computer
Parallel port
Use this port to connect a parallel printer with a 25-pin
connector to the system.
Serial ports
Attach a serial device with a 9-pin connector to each
serial port. Serial devices include a pointing device,
serial printer, or modem.
Universal serial bus (USB) ports
Use these ports to connect a wide range of new USB
devices, such as printers, mice, joysticks, keyboards, and
telecommunication devices. The speed varies between
12 megabits per second (Mbps) for printers and
1.5 Mbps for mice and keyboards. You can daisy chain
up to 127 devices using USB ports.
Audio connectors
The audio connectors include line out, line in, and
microphone in jacks, and a MIDI/game port.
The line out jack connects powered speakers and
other powered output devices.
The line in jack connects stereo audio devices, such
as an amplifier or a cassette or minidisc player for
playback or recording.
The microphone in jack connects a microphone or
telephone headset. Connect the microphone that
comes with your system to this jack.
The MIDI/game port lets you attach a digital
musical instrument for creating your own musical
instrument digital interface (MIDI) files or a joystick
or gamepad for playing games.