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Working Inside Your Computer 57
Installing Ultra ATA Drives
Your Macintosh can accommodate two internal 1-inch-high ATA devices in the U-shaped drive
carrier in drive position 3 in the computer. If your computer has one Ultra ATA drive, it sits in
the lower portion of this U-shaped drive carrier. You can install a second ATA device in the
upper part of the carrier.
1 Configure your Ultra ATA drive as the secondary drive (sometimes called the “slave drive” or
“drive 1”).
The drive that came with your Macintosh is designated the primary drive (sometimes called
the “master drive” or “drive 0”). Your Macintosh doesn’t work with Ultra ATA devices set for
cable select mode.
2 Unplug the power cord bundle from the main logic board and the ribbon cable from the
drive.
Unlock the power cord bundle
plug by pressing the small catch
located on the side of the plug.
Unplug the power cord bundle
from the main logic board.
(Side view)
Unplug the ribbon cable
from the hard disk drive.