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B-10 Dell Dimension 900 System Reference and Troubleshooting Guide
IRQ If port is set to Enabled, available interrupts are 7 (default)
and 5.
Operation
Mode
Sets parallel port to EPP (default), ECP, Standard, or
Bi-Directional mode of operation.
NOTE: See the device manufacturer's documentation for
information on which mode to use before changing this
setting.
ECP DMA
Channel
If operation mode is set to ECP, sets the DMA channel to 1
(default) or 3.
Floppy Disk
Controller
Determines if the diskette-drive controller is Enabled
(default) or Disabled.
PS/2 Mouse
Controller
Determines if the mouse controller is Enabled (default) or
Disabled.
IDE Controller Determines the IDE controller mode. Selections are Both
(default), Primary, or Disabled.
USB Host
Controller
Determines if the USB host controller is Enabled (default) or
Disabled. If set to Enabled, you can set the following addi-
tional option:
USB Legacy
Mode
Set to Disabled (default) if legacy USB support is not
desired. Enabled allows support for legacy USB devices.
NOTE: USB Legacy Mode automatically sets to Disabled if a
PS/2 keyboard is detected by the system during POST.
Table B-7. Onboard Peripherals Screen Menu Options (continued)
Option Function
NOTE: The Glossary in the system Help defines abbreviations and acronyms.