ATI RADEON CABLE HD 4870
073-1250 Rev. A 1
© 2009 Apple Inc. All rights reserved.
Mac Pro
First Steps
Shut down computer.1
2
Wait 10 minutes.
Warning: Parts inside
computer can be very
hot. Allow computer
to cool down before
continuing.
Unplug all external 3
cables except power
cord.
Touch metal PCI cover 4
on back of computer.
Unplug power cord.5
Opening the
Computer
Hold side access 1
panel and lift latch on
back of computer.
Warning: Edges of
access panel and
enclosure can be
sharp. Be careful
when handling.
Remove access panel 2
and place it on at
surface covered by
soft, clean cloth.
ATI Radeon HD 4870 Card Cable
Replacement Instructions
Note: Follow these instructions carefully. Failure to do so could damage your equipment and
void its warranty.
073-1250 Rev. A 2
© 2009 Apple Inc. All rights reserved.
Required Tool
Phillips #1 screwdriver
Removing the
Installed Cable
The cable is connected
to the graphics card. To
remove the cable, rst
removed the card.
Locate card.1
2
Using Phillips #1
screwdriver, loosen 2
captive screws
securing card’s
bracket to enclosure.
Remove bracket from 3
enclosure.
073-1250 Rev. A 3
© 2009 Apple Inc. All rights reserved.
4 Press button on PCIe
fan.
Move fan to left, 5
which releases
retention bar.
6 Disconnect card’s
cables from
backplane board.
Holding card by top 7
corners, pull it up out
of slot and remove
card from computer.
Note: If card is held in place by retention bar, complete steps 4 and 5. Otherwise, release small
locking clip at front of card’s connector by pushing clip up. Then go to step 6.
Checklist for handling card:
When removing or installing card, handle it only by the edges. Do not touch its connectors •
or any components.
Don’t rock card from side to side; instead, lift card straight up from connecotr to remove it, •
and press card straight into slot to install it.
Don’t force card. If you meet a lot of resistance, pull card out. Check connector and slot for •
damage or obstructions, then try inserting card again.
Pull card gently to see if it is properly connected. If it resists and stays in place and its gold •
connectors are barely visible, card is connected.
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