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2   How to Install and Replace Components In Your Desktop PC
Installing Accessory Boards
Configuring Accessory Boards with Plug and Play 
Plug and Play is an industry standard for automatically configuring 
your PC's hardware resources and the accessory boards installed in it. 
Your PC has configurable support for Plug and Play in the BIOS. 
All PCI accessory boards are Plug and Play, although not all ISA boards 
are. Check the accessory board’s documentation if you are unsure.
When you start your PC after installing an accessory board, the Plug 
and Play BIOS automatically detects which hardware resources (IRQs, 
DMAs, memory ranges, and I/O addresses) are used by PC components 
(such as the keyboard, the communications ports, network adapters, 
and accessory boards). 
Windows 95 and 
Windows 98
Operating systems that support Plug and Play, such as Windows 95 and 
Windows 98, will automatically detect a newly installed Plug and Play 
accessory board and install the driver for this device, if the driver is 
available. 
Windows NT 4.0
For operating systems that do not support Plug and Play, such as 
Windows NT 4.0, refer to the operating system documentation for 
information about installing accessory boards. 
In Windows NT 4.0, click the
 Start button then click Help. You can 
use the contents or index to find information about installing devices. 
Windows NT 4.0 helps you through the installation of devices such as 
modems and sound boards.
NOTE After installing a new device in Windows NT 4.0, you must re-install the 
Microsoft Service Pack to update the operating system for your PC.
To do this, click the
 Start button then select Programs – Windows 
NT Update.