Apple Mac Pro (Early 2009) - Manual (Page 31)

Chapter 2 Life with Your Mac Pro 31
Optical drives
Your Mac Pro comes with one or two DVD±R DL/DVD±RW/CD-RW SuperDrives in the
optical drive carrier. To replace an optical drive, see “Replacing the Optical Drive” on
page 63.
Hard disk drive
Your Mac Pro comes with up to four hard disk drives installed in the drive carriers.
To install or replace the hard disk drives, see “Installing Internal Storage Devices” on
page 59.
PCI Express slots
Your Mac Pro has three PCI Express expansion slots. To install PCI cards in slots 2 through
4 to expand the capabilities of your Mac Pro, see “Adding PCI Express Cards” on page 69.
Battery
Your Mac Pro uses an internal backup battery. If your Mac Pro has trouble starting up,
or if the system date and time are frequently incorrect, you may need to replace the
battery. See “Replacing the Internal Backup Battery” on page 74.
Double-wide PCI Express graphics slot
Connect up to two displays to the graphics card in the PCI Express graphics slot (slot 1).
You can replace the card in this slot and install additional graphics cards in PCI slots 2
through 4. See “Adding PCI Express Cards” on page 69.
Memory slots
Your Mac Pro has four or eight memory expansion slots, depending on the model. To
add more memory, install PC3-8500, 1066 MHz, DDR3 SDRAM UDIMMs in the memory
slots. See “Installing Memory” on page 41 for information about the type of memory
used in your Mac Pro.