Apple PowerBook (2400c) - Manual (Page 12)

Turning the computer on
m Press the Power key at the upper-right corner of the keyboard to turn the
computer on.
You should hear a tone when you turn on the computer. It takes the computer
a few moments to start up. You’ll see the Mac OS startup screen as the system
software is loaded on the computer. After your computer starts up for the first
time, a picture similar to this appears on the screen:
Note: Your screen should look very similar to this, but it may not look exactly
the same.
Power key
P
11 Getting Started