Aaeon SBC-598 Manual page 36

You can attach four IDE (Integrated Device Electronics) drives to
the SBC-598's internal controller. The SBC-598 CPU card has two
Enhanced IDE connectors: PRIMARY IDE and SECONDARY IDE.
Wire number 1 on the cable is red or blue, the other wires are gray.
Connect one end to PRIMARY IDE or SECONDARY IDE on the
CPU card. Make sure that the red (or blue) wire corresponds to pin
1 on the connector (on the right side).
Connecting the hard drive
Connecting drives is done in a daisy-chain fashion and requires
one of two cables, depending on the drive size. 1.8" and 2.5"
drives need a 1x44-pin to 2x44-pin flat-cable connector. 3.5" drives
use a 1x44-pin to 2x40-pin connector.
Wire number 1 on the cable is red or blue, and the other wires are
gray.
1. Connect one end of the cable to the IDE connector. Make
sure that the red (or blue) wire corresponds to pin 1 on the
connector, which is labeled on the board (on the right side).
2. Plug the other end of the cable to the Enhanced IDE hard
drive, with pin 1 on the cable corresponding to pin 1 on the
hard drive. (See your hard drive's documentation for the
location of the connector.)
Connect a second drive as described above.
Unlike floppy drives, IDE hard drives can connect to either end of
the cable. If you install two drives, you will need to set one as the
master and one as the slave by using jumpers on the drives. If you
install just one drive, set it as the master.
28 SBC-598 User Manual