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The ISA Configuration Utility (ICU) is used by the system to track what expansion cards are installed and what resources are used. With this information, the system automatically configures Plug and Play expansion cards and Peripheral Component Interconnect (PCI) expansion cards and can tell you how to configure non-Plug and Play Industry-Standard Architecture (ISA) expansion cards manually by setting jump- ers or switches. Plug and Play and PCI expansion cards do not contain jumpers and switches; they are configured only through software in the basic input/output system (BIOS).

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NOTE: The Windows NT operating system does not provide full Plug and Play sup- port. Therefore, some Plug and Play cards (such as modem, sound, and network cards) may not work with Windows NT. If your system is running a Dell-installed Windows NT operating system and you want to use Plug and Play cards, Dell recommends that you use the card manufacturer’s configuration utility to set the card to legacy mode, enter the card’s resources through the manufacturer’s utility, and then use the ICU to add the Plug and Play card to your system configuration. On sys- tems with a Dell-installed Windows NT operating system, the ICU is installed on the hard-disk drive as a diskette image. Use the Program Diskette Maker (located in the Dell Accessories program folder) to make an ICU diskette from this diskette image.

The remainder of this chapter describes the various features of, and the various ways to use, the ICU.

Using the ISA Configuration Utility 4-1