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Input / Output Identification . Intro to Computer Technologies. Your PC’s Backside . The back view of a typical PC personal computer. . Parallel. This port allows a cable to connect the computer to a printer. Angled edges This means it is keyed so it can only go in one way .

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input output identification

Input / Output Identification

Intro to Computer Technologies

your pc s backside
Your PC’s Backside
  • The back view of a typical PC personal computer.
  • This port allows a cable to connect the computer to a printer.

Angled edges

This means it is keyed so it can only go in one way.

Once it is plugged in, use the strews to provide a tight connection between your printer and computer

  • This port is a connection for peripherals such as a mouse, modem or storage system.

Usually has two on a computer

Also referred to as COM1 and COM2


Use screws to tighten

personal system 2 ps 2
Personal System/2 (PS/2)
  • These ports connect the mouse and keyboard to the computer


Do not try to force in, could bend pins

Not hot swappable

network interface card
Network Interface Card
  • The NIC is the computer’s connection to the network.

Could be a telephone line or an Ethernet connection


video graphics array
Video Graphics Array
  • The VGA port allows the computer to connect to a monitor(s).

Could be on-board video

If an AGP or a PCIe video card was installed, you would plug the VGA into that


Use screws to tighten

  • These ports allow for connection of speakers and microphones.

Red – Microphone Jack (connects a standard computer microphone)

Blue – Line In Jack (Connect record/playback devices such as cassette players, CD players, and VCRs)

Green – Line Out Jack (connects computer speakers or headphones. Amplified to support headphones.

Not Keyed

universal serial bus
Universal Serial Bus
  • This port houses many portable devices and is also being used for printers, keyboard, and a mouse.
  • Keyed
  • This port is for the plug that provides electricity to the computer.

AC Adapter


voltage expansion slots
Voltage & Expansion Slots
  • #1, 2) Expansion Card Slots
  • #4) AC Voltage Switch (115 or 230)
  • Make sure you have it set to your local AC voltage (115 volts AC in North America). Change it to the correct value if you need to and restart your system.
  • Setting the input voltage to 230 volts with 115 volts as the incoming power is a harmless prank, but leaving a North American computer set to 115 volts and plugging it into 230-volt power will destroy the power supply and possibly other components. Always leave the power supply set to the correct input voltage.
removing installing a video card
Removing/Installing a Video Card
  • Power off / Unplug everything
  • Open case cover
  • Neutralize Yourself
  • Remove your old video card from its expansion slot.
  • Insert your new video card into an expansion slot.
  • Screw the card into place
  • Connect the monitor to your new video card.
  • Turn your machine on
  • Install the display drivers for your new video card.