Apple Front Panel Board Cable warranty Apple Inc. All rights reserved

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Note: Card is held in place by retention bar. Following two steps explain how to release bar.

6Press button on PCIe fan.

7Move fan to left, which releases retention bar.

Note: Some graphics cards require 1 or 2 booster cables connecting card to auxiliary power connectors on backplane board. If your card has booster cables, disconnect them from backplane board.

073-1257 Rev. A 4

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Contents First Steps Unplug power cordOpening Computer Hard Drive Required ToolsPull hard drive out of far-left drive bay Locate graphics card in slot Graphics CardRemove bracket from enclosure Apple Inc. All rights reserved Checklist for handling card Processor Tray Locate processor trayPCIe Fan Locate PCIe fanRemove 2 screws Slide fan up and out of computer Processor CageLocate processor cage Repeat steps 4 and 5 for rear fan Front Panel Board Cable Lift cage out of enclosureInstalling Replacement Cable Secure 6 captive screws Reconnect 3 cables Reinstall graphics card in slot Slide PCIe fan to the right to lock card in placeClosing Computer Replace access panelReplace hard drive Far-left drive bay

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