PowerLogix PowerForce G4 ‘57 Installation Instructions Manual page 10

Align the CPU card with the motherboard by looking through the screw holes in the PowerForce card. Once
the card is aligned, snap the PowerForce card into the motherboard socket. It will only install one way. There
may be a positive 'click' when it is plugged in completely, however this is not always the case; sometimes
there is no positive detent even though the connector is installed properly. DO NOT EXERT EXCESSIVE
FORCE!
Using the original screws, secure the PowerForce card into place on the motherboard. This is a little tricky as
the screws have to be placed through the heatsink; a magnetized screwdriver may help. To install the screw
underneath the fan, you may want to remove the fan (if already attached) to aid installation of the screw. If
removed, be sure to follow the instructions below to reattach the fan correctly.
CPUs with included Fans:
Connect the 4 pin wiring harness for the fan to one of the disk drive power connectors. A pass thru
connector is provided.
Attach the fan guard to the top of the fan. Mount the fan on the heat sink as shown in the photo, and secure
with the two screws.
Make sure the airfl ow indicator on the fan is in the proper direction. Air should be blowing down onto the
card. Refer to the arrows in the photo below.
The label on the center of the fan should face towards the heatsink, and will not be visible.
Close the case cover. Do not operate the Mac with the cover open as the case needs to be closed for
proper cooling. Some Mac models may have fans, but the cover still should be closed when operating the
PowerMac.
PowerLogix PowerForce 7447/7457 Installation Manual Page #10