162 ULTRA ATA DEVICES
A system has three devices: Ultra ATA-100 hard drive, CD-ROM drive, and a DVD drive. Using the Device Class 
Table, the devices can be identified as:
 Ultra ATA-100 hard drive = Class 1
 DVD drive = Class 2
 CD-ROM drive = Class 3
Figure C–2 Installing Drive Order (2)
Example 2: Four Device Installation Sample
A system has four devices: Ultra ATA-100 hard drive, Ultra ATA-100 hard drive, DVD-CDR/W drive, and a ZIP-250 
drive. 
 Ultra ATA-100 hard drive = Class 1
 Ultra ATA-100 hard drive = Class 1
 DVD-CDR/W drive = Class 2
 ZIP-250 drive = Class 4
Table C-4 Attach Sequence Worksheet—Three Device Installation (Sample)
Device Name Device Class Position 
Number
Controller Name Device 
Number
Ultra ATA-100 hard drive 1
1
Primary 0
DVD drive 2
2
Secondary 0
CD-ROM drive 3
3
Secondary 1
Table C-5 Attach Sequence Worksheet—Four Device Installation (Sample)
Device Name Device 
Class
Position 
Number
Controller Name Device 
Number
Ultra ATA-100 hard drive 1
1
Primary 0
1
2
4
3
Primary 
Controller*
41
Secondary 
Controller
32
Device 1 Device 0