Apple PowerBook (3400 series) - Manual (Page 45)

Using a CD in the CD-ROM drive
If you have the optional CD-ROM drive, you insert or remove the drive in the
same way as any other module.
Inserting a disc
To load a compact disc in the drive, follow these steps:
1 Start up the PowerBook, if it’s not already on.
2 Press the Open button on the outside of the CD-ROM module to open its tray.
The tray opens (partially).
(If the tray doesn’t open, a disc may already be in the drive. Drag its icon to
the Trash to open the tray. You’ll see a message if the disc is in use.)
3 Pull the tray all the way open and place a CD-ROM disc in the tray, with the label
facing up.
Make sure the disc is lying flat in the tray and is seated firmly on the spindle.
Avoid touching the drive’s lens.
Insert the disc,
label side up.
45 Using Expansion Bay Modules and PC Cards