Apple Power Macintosh 4400 - Manual (Page 57)

5 Turn on the computer.
Now you’re ready to hear full-range stereo sound coming from the speakers.
To adjust the overall volume, use the Monitors & Sound control panel, which
uses software inside your computer to adjust volume. (For more information,
see “Adjusting Volume and Sound,” earlier in this section.)
Connecting headphones
If your monitor has a headphone jack, you can connect headphones to it.
For more information on listening with headphones, see the “Sound” topic
area of Macintosh Guide, available in the Guide (h) menu.
Connecting external SCSI devices, such as a scanner or external hard disk
Your computer has a port for connecting devices that use the Small Computer
System Interface (SCSI, pronounced “skuh-zee”). SCSI devices commonly
used with the Macintosh include hard disk drives, CD-ROM drives, scanners,
tape or cartridge backup drives, and some printers. The SCSI port permits
high-speed communication between the computer and the device. The SCSI
icon appears below the port on the computer’s back panel.
You can connect SCSI devices to the SCSI port in a chainlike fashion. The
first device in the chain plugs into the SCSI port; the second device plugs into
the first device, and so on. You can attach up to seven external SCSI devices
to the SCSI port. Each SCSI device connected to this chain must have its own
unique ID number from 0 through 6 (no two devices can use the same
ID number).
SCSI port
SCSI icon
57 Connecting Equipment and Expanding Your Computer