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IDE connection plugs order

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#1 stlolth


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Posted 26 April 2009 - 05:43 AM

Should master and slave devices be plugged in by any special order on the IDE cable? That is to say, is of the two plugs on an IDE cable one meant for master and one meant for slave, or does it not matter which one plugs in which?

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#2 dpunisher


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Posted 26 April 2009 - 05:49 AM

If you manually set "master" and "slave" via the jumpers on the drives, then order doesn't matter. If you select "CS" then the end connector is master, the middle is slave.

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#3 Platypus


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Posted 26 April 2009 - 07:19 AM

In addition, there is a small difference between 80-wire UDMA cables, and the older 40-wire cables. 80-wire cables work as dpunisher has said.

The vast majority of 40-wire cables will not function using CS (Cable Select). So for example if you have the older gray 40-wire cable with 3 black connectors going to optical drives (CD, DVD), you must set Master and Slave drives with the drive jumpers, then it doesn't matter which position on the cable the drives are connected.

In either case, if there is a single drive jumpered as Master/Single Drive, it should go on the end connector. It will work on the middle one, but the stub of unconnected cable can cause misbehavior.
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