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Power Mac G4 (Mirrored Drive Doors/FW 800) ATA Cable - 
 
2
 
6.
Touch the metal PCI access covers on the back of the computer. 
 
(Figure 1)
Figure 1
Important:
 
 To avoid electrostatic discharge, always ground yourself by touching the 
port access covers before you touch any parts or install any components inside the 
computer. To avoid static electricity building back up in your body, do not walk 
around the room until you have completed the installation and closed the computer. 
7.
Unplug the power cord.
 
Warning: The power supply in your computer is a high-voltage component and 
should not be opened for any reason, even when the computer is off. If the 
power supply needs service, contact your Apple reseller or Apple Authorized 
Service Provider.
 
8.
Lift the latch on the right side access panel.
9.
Gently lower the access panel until it lies flat. To avoid scratching the case, lower the 
panel onto a soft, clean cloth.
 
Warning: If you see any lights glowing on the main logic board, the computer has 
not been shut down. Close the side access panel and shut down the computer 
before proceeding.