4000 SX  (250-4900)            IDE Connectors           Faxback Doc. # 1530

Integrated Drive Electronics (IDE) let you install up to two hard drives 
without having to buy and install a hard drive controller adapter. Although
the IDE system requires IDE-type hard drives, an IDE drive can function the
same as a standard ST-506 type hard drive. If you choose not to use the IDE
system and to install a different type of hard drive system, such as ESDI or
ST-506, you will need to change a dip switch setting on the main logic board
so that the new hard drive controller adapter can take over.

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