Apple Power Mac G4 (Digital Audio) - Manual (Page 66)

66 Chapter 4
Installing a PCI Expansion Card or Replacing the AGP Card
You can expand the capabilities of your Power Mac G4 by installing cards in its expansion
slots. The computer has five expansion card slots, four of which accommodate peripheral
component interconnect (PCI) cards and one that accepts an AGP card.
AGP cards and PCI cards have different connectors, so you cannot insert a PCI card into the
AGP slot.
About AGP Cards
Your AGP card, installed in slot 1, provides the computer’s monitor port. Slot 1 is designed
specifically to accept AGP cards that have a 32-bit data width. This 66 megahertz (MHz) slot
accommodates 3.3 volt ( V ) AGP cards (see the image on page 68).
You can replace the card that came with the computer with an AGP 1X card, 2X card, or 4X
card. A replacement AGP card must have a driver compatible with the Mac OS. Maximum
power consumption for a replacement AGP card should not exceed 20 watts ( W ).
About PCI Expansion Cards
Your Macintosh has four expansion slots, labeled 2, 3, 4, and 5, which accept PCI cards up
to 12 inches long. Some models come with a SCSI PCI card installed in one of these slots.
Install only expansion cards that come with Macintosh driver software and that comply with
the PCI 2.1 standard.
The PCI slots can accommodate mixed voltage (5.0 V or 3.3 V ) cards with 32-bit or 64-bit data
widths and a 33 MHz frequency. You can add a 66 MHz card to a PCI slot if the card can
operate at the lower 33 MHz rate.
Maximum power consumption for all five expansion slots (the four PCI expansion cards and the
AGP card) should not exceed 55 watts (W).
Warning Do not use cards that function only at 66 MHz in the PCI slots. Damage to your
equipment could result. If you have a 66 MHz card, check the card’s manufacturer to see
if it also works at 33 MHz.