Primary (Cn1) And Secondary (Cn2) Ide Connectors - Advantech PCA-6166 User Manual

2.1 Primary (CN1) and Secondary (CN2) IDE
Connectors
You can attach up to four IDE (Integrated Device Electronics) drives
to the PCA-6166's internal controller. The primary (CN1) and
secondary (CN2) connectors can each accommodate two drives.
Wire number 1 on the cable is red or blue and the other wires are
gray. Connect one end to connector CN1 or CN2 on the CPU card.
Make sure that the red/blue wire corresponds to pin 1 on the connec-
tor (in the upper right hand corner). See Chapter 1: Hardware
Configuration for help finding the connector. Note that pin 20 has
been removed. This ensures that ribbon cables will be connected with
the correct orientation.
Unlike floppy drives, IDE hard drives can connect in either position
on the cable. If you install two drives to a single connector, you will
need to set one as the master and one as the slave. You do this by
setting the jumpers on the drives. If you use just one drive per
connector, you should set each drive as the master. See the documen-
tation that came with your drive for more information.
Connect the first hard drive to the other end of the cable. Wire 1 on
the cable should also connect to pin 1 on the hard drive connector,
which is labeled on the drive circuit board. Check the documentation
that came with the drive for more information.
Connect the second hard drive to the remaining connector (CN2 or
CN1), in the same way as described above.
Important: Ultra DMA/66 devices must use a 40-pin with
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80-conductor cable.