User`s manual

PCM-3347 User’s Manual 16
2.15 5 V connector (CN16)
The PCM-3347 is equipped with a low power dissipation STPC. With
only a heat sink, the PCM-3347 will operate normally at temperatures up
to 60× C. At temperatures above 60× C, a fan is recommended. A CPU
fan power supply connector is provided (+5 V input) in addition to the
CPU power supply.
This provides power supply to the optional CPU cooling fan. This con-
nector is only available when +5 V power is supplied to the board.
2.16 FDD connector (CN22)
You can attach one 3.5" floppy drive to the the PCM-3347's onboard con-
troller. This is useful for notebooks, for example.
A daisy-chain drive cable converter (part no. 9681000044) is required for
a single floppy system. A 34-pin flat-cable connector is fitted on one end
of the cable converter, while the other end has one floppy disk drive con-
nector. It consists of a 34-pin flat-cable connector (for the 3¾î drives).
2.16.1 Connecting the floppy drive
1. Plug the 34-pin flat-cable connector into the cable converter. 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.
When connecting a 3¾” floppy drive, you may have some difficulties in
determining which pin is 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 num-
ber one should be on the right. Please refer to any documentation that
came with the drive for more information.
Warning: Before making the connection, make sure that
the voltage is absolutely correct and matched
with the correct connector.