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3.2 CompactFlash disk interface (CN6)
The CompactFlash socket is specially designed to prevent any
incorrect installation of the CompactFlash disk card. When
installing or removing the CompactFlash disk card, please make
sure that the system power is off. The CompactFlash disk card is
defaulted to drive E: in your system.
3.3 Floppy drive connector (CN8)
You can attach up to two floppy drives to the the SOM-DB4400 on-
board controller. The recommend drives are 3.5" drives.
A 34-pin daisy-chain drive connector cable is required for a dual-
drive system. A 34-pin flat-cable connector is fitted on one end of
the cable while the other end sports two sets of floppy disk drive
connectors. Each set consists of a 34-pin flat-cable connector (for
the 3½" drives) and a printed-circuit board connector (for the 5¼"
drives).
1. Plug in the 34-pin flat-cable connector into CN8. Make sure that
the red wire corresponds to pin 1 on the connector.
2. Attach the appropriate conector at the other end of the cable to
the floppy drive(s). You can use only one connector in the set.
The set at the other end (after the twist in the cable) connects
to the A: drive. The set in the middle connects to the B: drive.
3. If you are connecting a 5¼" floppy drive, line up the slot in the
printed circuit board with the blocked-off part of the cable
connector.
When connecting a 3½" floppy drive, you may have some difficul-
ties in determining which pin is pin number one. Look for a number
on the circuit board indicating pin number one. In addition, you
should check if the connector on the floppy drive has an extra slot.
If the slot is up, pin number one should be on the right. Please refer
to any documentation that came with the drive for more informa-
tion.
Chapter 2 Connector Information
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