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This document updates information contained in your Dell OptiPlex GX1 and NX1 sys- tem documentation. It describes the following features:

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Reinstallation of DirectX and video drivers

Proper configuration of network drivers if you have a 3Com® PCI 3C905b Ether- net network interface controller (NIC)

Reinstallation of the Microsoft®-updated Advanced Technology Attachment Packet Interface (ATAPI) driver for the Microsoft Windows NT ® 4.0 operating system

New online documentation

New System Setup options

System board layout for new OptiPlex systems

New microprocessor option

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If you ever need to reinstall the Microsoft Windows® 95 operating system, you should also reinstall the software drivers and utilities that came with your Dell system. This section specifically describes how to reinstall DirectX drivers and video drivers. Your online System User’s Guide or Network Administrator’s Guide describes how to install other types of drivers and utilities.

DirectX is a group of technologies designed to enhance application programs that are rich in multimedia elements such as full-color graphics, video, 3D animation, and surround sound. The presence of DirectX drivers on your system also ensures accelerated-graphics port (AGP) support.

To reinstall DirectX drivers and any other drivers and utilities that came with your sys- tem, you need a set of diskettes that contain the software. If your computer is not part of a centrally managed network, such as a network that connects computer workstations in an office environment, you should create a set of program diskettes using the Dell Program Diskette Maker. The program diskettes contain installation programs for the drivers and utilities needed by your system. To access the Program

Dell OptiPlex GX1 and NX1 Documentation Update 1-1