IBM NetVista A21 Quick Reference page 22

9. Connect any additional devices that you have. Your computer might not
have all connectors that are shown.
1 USB
2 Serial
3 S-video
4 Parallel
5 Ethernet
6 MIDI/joystick
7 IEEE 1394
8 S/PDIF
8
Quick Reference
Use these connectors to attach a device that requires a
Universal Serial Bus (USB) connection, such as a USB
scanner, printer, or personal digital assistant (PDA).
Use this connector to attach an external modem, serial
printer, or other device that uses a 9-pin serial connector.
This connector is present on some high-performance video
adapters. Use this connector to attach a television set that
has an S-Video connector.
Use this connector to attach a parallel printer or any other
device that requires a 25-pin parallel connection.
Use this connector to attach the computer to an
Ethernet-type local area network or to a cable modem.
Important
To operate the computer within FCC limits when
connecting to an Ethernet network, use a Category 5
Ethernet cable.
Use this connector to attach a joystick, gamepad, or a
musical instrument digital interface (MIDI) device such as
a MIDI keyboard.
This connector is sometimes called Firewire because it
transmits data rapidly. There are two types of IEEE 1394
connectors: the 4-pin and the 6-pin. IEEE 1394 offers
connection to several types of consumer electronics,
including digital audio devices, scanners, and other
devices.
The S/PDIF connector enables you to connect consumer
digital equipment such as digital audio tape (DAT)
devices, CD drives, and other S/PDIF-compatible devices.
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