Apple mac pro 8x User Manual

							Mac Pro (8x) Take Apart — Optical Drive Carrier and Optical Drives 21
Optical Drive Carrier and 
Optical Drives 
The Mac Pro (8x) computer can accommodate two optical drives in the optical drive bay. If the 
computer has only one optical drive, it is installed in the top position. 
Note: To eject the drives, use the following:
Top drive: Press the Eject key.• 
Bottom drive: Press the Option and Eject keys.• 
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.
Important: Make sure the latch on the back panel is in the up position. When the latch is down, 
the optical drives and carrier are locked in place and you will not be able to remove them.
Part Location 
						

							Mac Pro (8x) Take Apart — Optical Drive Carrier and Optical Drives 22
Procedure
Removing the Optical Drive Carrier and Optical Drives
Make sure the latch on the back panel is up, so that the drives and carriers are unlocked. 1. 
 
Pull the optical drive carrier part way out of the computer. 2.   
						

							Mac Pro (8x) Take Apart — Optical Drive Carrier and Optical Drives 23
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 (8x) Take Apart — Optical Drive Carrier and Optical Drives 24
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 (8x) Take Apart — Memory (DIMMs) and Memory Riser Cards 25
Memory (FB-DIMMs) and  
Memory Riser Cards
The Mac Pro (8x) 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 1 GB of memory, installed as a pair of 512 MB fully buffered, dual inline memory modules (FB-
DIMMs) in two of the DIMM slots. Additional DIMMs can be installed in the open DIMM slots, as 
illustrated below.
Note: DIMMs must be installed in pairs of equal size from the same vendor. In the illustration 
below, DIMMs in one colored pair do not need to match DIMMs in a different colored pair.
  
						

							Mac Pro (8x) Take Apart — Memory (DIMMs) and Memory Riser Cards 26
DIMMs for Mac Pro (8x) must fit these specifications:
667 MHz, FB-DIMMs• 
72-bit wide, 240-pin modules• 
36 devices maximum per DIMM• 
Error-correcting code (ECC)• 
Memory from older Macintosh computers is not compatible with Mac Pro (8x). 
Important: For proper operation of Mac Pro (8x) computers, Apple recommends using only 
Apple-approved Mac Pro (8x) 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 (8x) Take Apart — Memory (DIMMs) and Memory Riser Cards 27
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 (8x) Take Apart — Memory (DIMMs) and Memory Riser Cards 28
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 (8x) Take Apart — PCI Express/Graphics Card 29
PCI Express/Graphics Card
The Mac Pro (8x) 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 (8x) models. In addition, Mac Pro (8x) 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 (8x) Take Apart — PCI Express/Graphics Card 30
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.