Apple Macintosh Performa 5400 Series - Manual (Page 150)

High Performance Module configurations
A High Performance Module (level 2 memory cache) provides an overall
increase in your computer’s performance. Although the megahertz processor
speed stays the same when you install a High Performance Module (see your
Technical Information booklet for the exact speed), your computer performs
tasks significantly faster with a High Performance Module installed. You can
add a High Performance Module by installing the module on the main logic
board of your computer.
Installing the DIMM or High Performance Module
Installing memory involves three steps:
m opening the computer
m inserting the DIMM or High Performance Module into a specific slot
m closing the computer
Opening the computer
IMPORTANT To avoid generating static electricity that may damage
components, do not walk around the room until you have completed the
installation of the expansion card or memory and closed the computer.
Additionally, move the logic board as little as possible while it is outside the
computer case.
1 Shut down your computer by choosing Shut Down from the Special menu.
You can also press the Power key on the keyboard.
2 Turn the computer completely off by pressing the power switch at the back of the
computer.
Press the side of the switch marked with the j symbol.
3 Unplug all the cables except the power cord from the computer (including the cable that
connects your keyboard to the computer).
Leaving the power cord plugged in for now helps protect the computer from
electrostatic discharge damage. (You’ll unplug the power cord later.)
149 Installing Additional Memory