Apple quadra.lc 630.performa 640 Service Manual

 

 Basics

General Information - 7

 

The internal hard drive uses IDE (Intelligent Device 

Electronics) technology, commonly used in DOS-compatible 

systems.

The internal IDE hard drive functions the same as a typical 

SCSI hard drive.  You must replace IDE drives like for like.

The IDE drive does not affect SCSI ID selections or SCSI 

termination schemes.

Seven external SCSI devices may be daisy chained through 

the external SCSI port.