Cable Select Option; Figure 4. Connecting Cable-Selected Drives - Seagate ST5660A Product Manual

ST5660A Product Manual, Rev. A

2.5 Cable select option

If your computer and both of your drives support cable select, you can
use the cable select option to determine the master and slave, according
to the following guidelines, which are illustrated in Figure 4.
• The drive plugged into the I/O connector that carries the CSEL signal
is the master.
• The drive plugged into the I/O connector that does not carry the CSEL
signal is the slave.
To configure your drives using cable select, you need to:
• Install jumpers on pins 1 and 2, pins 3 and 4, and pins 5 and 6 of the
options jumper block shown in Figure 3.
• Use a cable built for cable select to designate master and slave. The
cable and its connectors transmit the CSEL signal (pin 28) to the
master drive, but not to the slave drive, as shown in Figure 4.
Slave
Line 28 is open
Master
Computer

Figure 4. Connecting cable-selected drives

Master
Slave
Line 28 is open
Computer
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