Making Connections
Connecting External Components
74 Reference Guide
To connect a printer or another parallel device
The parallel port has a standard 25-pin connector, most commonly used for connecting
dot-matrix, ink-jet, and laser printers. You can also use it to connect a parallel Zip drive.
• Connect the parallel printer cable or other parallel cable to the parallel port of the
computer or the port replicator.
Note
If you connect a Zip drive to the parallel port, you can enhance its performance by
installing the accelerator software supplied with your Zip drive.
To connect an external keyboard or PS/2 mouse
The 6-pin PS/2 port allows you to attach an external keyboard or a PS/2-compatible
mouse to the computer. While an external PS/2 mouse is connected, the touch pad is
normally disabled. The computer provides one PS/2 port; the optional port replicator
provides two PS/2 ports.
• Plug the mouse or keyboard PS/2 cable into the PS/2 port on the computer, or plug
either or both PS/2 cables into the PS/2 ports on the port replicator.
• To connect both a mouse and keyboard to the computer, use the PS/2 Y adapter,
which is available separately.
• To connect a device that has a PC-type jack, first connect its cable to an adapter cable
with a PS/2 jack.
To connect a USB device
Universal serial bus (USB) provides a bidirectional serial interface for adding peripheral
devices—such as game controllers, serial and parallel ports, and scanners—on a single
bus. The computer provides two USB ports; the optional port replicator also provides
two USB ports.
• Attach the USB cable to the USB port on the computer or to either USB port on the
port replicator. Windows automatically recognizes the USB device.
Some USB devices can be connected to the computer in series—this is called a daisy-
chain connection.
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