Apple mac pro early 2008 User Manual

							Mac Pro (Early 2008) Take Apart — Optical Drive Carrier and Optical Drives 21
Disconnect the power and ribbon cables from the optical drive(s) and remove the carrier. 3. 
If you are replacing the optical drive with a new optical drive, do the following:4. 
Remove the four mounting screws and remove the optical drive from the carrier.• 
Use the four screws to mount the replacement drive in the carrier.• 
Note: If you are adding a second drive to the carrier, use the four screws stored on the back of 
the drive carrier to secure the drive to the carrier. 
						

							Mac Pro (Early 2008) Take Apart — Optical Drive Carrier and Optical Drives 22
Replacing the Optical Drive Carrier and Optical Drives 
Important: Use the original Apple cables that came with the computer when you install or 
replace the optical drives. If just one optical drive is installed, tuck the cables for the second drive 
out of the way.
Attach the power and ribbon cables to the back of the drive(s). 1. 
 
Important: Attach the connector on the end of the optical drive ribbon cable and the 
connector in the middle of the optical drive power cable to the top drive. If there is a second 
drive in the carrier, attach the remaining optical drive ribbon and power connectors to the 
bottom drive. 
Slide the optical drive carrier over the guides and into place in the optical drive bay. 2.  
 
Important: Be very careful not to catch the cables under the carrier as you slide it into the 
bay. 
						

							Mac Pro (Early 2008) Take Apart — Memory (DIMMs) and Memory Riser Cards 23
Memory (FB-DIMMs) and  
Memory Riser Cards
The Mac Pro (Early 2008) computer has two memory riser cards with a total of 8 memory slots. 
On each card, the slots are arranged as two banks of two slots each. The computer comes with 
a minimum of 2 GB of memory, installed as a pair of 1 GB fully buffered, dual inline memory 
modules (FB-DIMMs) in two of the DIMM slots. Additional pairs of 1 GB, 2 GB, or 4 GB FB-DIMMs 
can be installed in the open DIMM slots, as illustrated below. Maximum memory is 32 GB.
DIMMs must be installed as pairs of identical size and type, from the same vendor. In the 
illustration below, like-colored DIMMs must match. 
						

							Mac Pro (Early 2008) Take Apart — Memory (DIMMs) and Memory Riser Cards 24
DIMMs for Mac Pro (Early 2008) must fit these specifications:
800 MHz, DDR2, FB-DIMMs• 
72-bit wide, 240-pin modules• 
36 memory ICs maximum per DIMM• 
Error-correcting code (ECC)• 
Memory from older Macintosh computers is not compatible with Mac Pro (Early 2008). 
Important: For proper operation of Mac Pro (Early 2008) computers, Apple recommends using 
only Apple-approved Mac Pro (Early 2008) FB-DIMMs. Refer to GSX for Apple FB-DIMMs service 
part numbers.
Tools
No tools are required for this procedure.
Preliminary Steps
Before you begin, open the computer, and lay it on its side with the access side facing up.
Warning: Always wait 5–10 minutes for the computer to cool down before you remove or install 
memory. The DIMMs may be very hot.
Part Location 
						

							Mac Pro (Early 2008) Take Apart — Memory (DIMMs) and Memory Riser Cards 25
Procedure
Holding the memory riser card by the two finger holes, pull it out of the memory cage and 1. 
place the card DIMM side up on a soft, clean cloth. 
Open the ejectors on the DIMM slot by pushing them out to the sides, and remove the 2.  
DIMM from the riser card.  
						

							Mac Pro (Early 2008) Take Apart — Memory (DIMMs) and Memory Riser Cards 26
Replacement Note: Align the DIMM in the slot on the riser card and push both ends of the 
DIMM down until the ejectors snap back up into place.
Warning: FB-DIMMs carry heatsinks on either side of the DIMM. Never attempt to remove the 
heatsinks from the DIMMs. Doing so could damage the DIMM. 
						

							Mac Pro (Early 2008) Take Apart — PCI Express/Graphics Card 27
PCI Express/Graphics Card
The Mac Pro (Early 2008) logic board includes one double-wide PCI Express graphics slot and 
three PCI Express expansion slots, for a total of four slots. The computer comes with a graphics 
card installed in slot 1. You can install additional PCI Express graphics and expansion cards in the 
remaining three PCI Express expansion slots.
Important:  Graphics cards from previous Power Mac G5 models are not compatible with Mac 
Pro (Early 2008) models. In addition, Mac Pro (Early 2008) graphics cards are not compatible with 
previous models.
Important: Combined maximum power consumption for all four PCI Express slots must not 
exceed 300 W.
Slot 1: Double-wide
PCI Express graphics
(graphics card installed) Slots 2–4: PCI Express
Tools
The only tool required for this procedure is a Phillips #1 screwdriver.
Preliminary Steps
Before you begin, open the computer, and lay it on its side with the access side facing up.
Note: You may also find it helpful to remove the hard drives and carriers and any adjacent PCI 
Express cards before beginning this procedure. 
						

							Mac Pro (Early 2008) Take Apart — PCI Express/Graphics Card 28
Part Location
Procedure
This procedure explains how to remove a standard card and a card that includes a booster cable. 
Before you can remove either type of card, however, you must first loosen the two captive screws 
that secure the PCI bracket to the enclosure and remove the bracket.  
						

							Mac Pro (Early 2008) Take Apart — PCI Express/Graphics Card 29
Warning: When removing or installing a card, handle it only by the edges. Do not touch its 
connectors or any of the components on the card. Lift the card straight out from the connector 
to remove it, and insert it straight into the connector to install it. Do not rock the card from side 
to side and don’t force the card into the slot. Once the replacement card is installed, pull on it 
gently to check that it is properly connected. 
Standard Card
Release the small locking clip at the front of the card’s logic board connector by pushing the 1. 
clip up toward the media shelf.
Holding the card by the top corners, pull up the card and remove it from its expansion slot.2.  
Replacement Note: Align the card’s connector with the expansion slot and press until the 
connector is inserted all the way into the slot. If you’re installing a 12-inch card, make sure the 
card engages the appropriate slot in the PCI card guide.
Don’t rock the card from side to side; instead, press the card straight into the slot. • 
Don’t force the card. If you meet a lot of resistance, pull the card out. Check the connector • 
and the slot for damage or obstructions, then try inserting the card again.
Pull the card gently to see if it is properly connected. If it resists and stays in place and its • 
gold connectors are barely visible, the card is connected.  
						

							Mac Pro (Early 2008) Take Apart — PCI Express/Graphics Card 30
Card with Booster Cable
Some graphics cards require either one or two booster cables connecting the card to the 
auxillary power connectors on the logic board. 
Note: The graphics card NVIDIA GeForce 8800 GT requires one booster cable; the graphics card 
NVIDIA Quadro FX 5600 requires two booster cables. 
Disconnect the booster cable(s) from the logic board.1. 
Release the small locking clip at the front of the card’s logic board connector by pushing the 2.  
clip up toward the media shelf.
Holding the card by the top corners, gently pull up the card and remove it from its 3. 
expansion slot. 
If you are replacing a booster cable with a new one, disconnect the cable from the card.4.