Floppy Drive Connector (Cn3) - Advantech AIMB-554 User Manual

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.

2.3 Floppy Drive Connector (CN3)

You can attach up to two floppy disk drives to the AIMB-554's onboard
controller. You can use 3.5" (720 KB, 1.44 MB) drives.
The motherboard comes with a 34-pin daisy-chain drive connector cable.
On one end of the cable is a 34-pin flat-cable connector. On the other end
are two sets of 34-pin flat-cable connector (usually used for 3.5" drives).
The set on the end (after the twist in the cable) connects to the A: floppy
drive. The set in the middle connects to the B: floppy drive.
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