Apple ATI RADEON CABLE HD 4870 User Manual

 Mac Pro

ATI Radeon HD 4870 Card Cable

Replacement Instructions

First Steps

Shut down computer.1

Wait 10 minutes.

2

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

Note: Follow these instructions carefully. Failure to do so could damage your equipment and
void its warranty.

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.

© 2009 Apple Inc. All rights reserved.

073-1250 Rev. A 1

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.

© 2009 Apple Inc. All rights reserved.

073-1250 Rev. A 2

4 Press button on PCIe

fan.

Move fan to left, 5

which releases
retention bar.

6 Disconnect card’s

cables from
backplane board.

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.

Holding card by top 7

corners, pull it up out
of slot and remove
card from computer.

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.

© 2009 Apple Inc. All rights reserved.

073-1250 Rev. A 3