Apple Mac Pro (Early 2009) - Manual (Page 98)

98 Chapter 5 What’s Under the Hood
PCI Express Expansion
 Four full-length PCI Express expansion slots (slot 1 contains the graphics card)
 Slots 1 and 2 are x16, PCI Express 2.0 slots
 Slots 3 and 4 are x4, PCI Express 2.0 slots
 All four slots can support 16-lane cards
 300 W combined maximum for all PCI Express slots
SuperDrive (DVD±R DL/DVD±RW/CD-RW) Specifications
 Disc diameters supported: 12 cm and 8 cm
Data formats
 CD-ROM
 CD-Audio
 CD-R
 CD-RW
 CD-I
 CD-I Bridge
 CD Extended
 CD Mixed Mode
 Photo CD
 Video CD
 Enhanced CD
 DVD-Video
 DVD±R