Aaeon PCM-6897/L Manual page 28

Compact Board
connector. On the other end are two sets of floppy disk drive
connectors. Each set consists of a 34-pin flat-cable connector
(usually used for 3.5" drives) and a printed-circuit board connector
(usually used for 5.25" drives). Wire number 1 on the cable is
normally red or blue, and the other wires are usually gray.
Connecting the floppy drive
1. Plug the 34-pin flat-cable connector into CN4. Make sure that
the red or blue wire corresponds to pin 1 on the connector.
2. Attach the appropriate connector on the other end of the cable
to the floppy drive(s). You can use only one connector in the set.
The set on the end (after the twist in the cable) connects to A: drive.
The set in the middle connects to B: drive.
3. If you are connecting a 5.25" floppy drive, line up the slot in the
printed circuit board with the blocked-off part of the cable
connector.
If you are connecting a 3.5" floppy drive, you may have trouble
determining which pin is pin number 1. Look for a number
printed on the circuit board indicating pin number 1. Also, the
connector on the floppy drive connector may have a slot. When the
slot is up, pin number 1 should be on the right.
Check the docu mentation that came with the drive for more
information.
Pin Signal
1 GND
3 GND
5 GND
7 GND
9 GND
11 GND
13 GND
15 GND
Chapter 2 Quick Installation Guide
P C M - 6 8 9 7 / L
Pin Signal
2 REDWC
4 N.C.
6 DS1
8 INDEX
10 MOTOR A
12 DRIVE SELECT B
14 DRIVE SELECT A
16 MOTOR B
2 - 14