3301690 CPU Card
status LEDs
ATXCTL1 ATX connector 3-pin header connects a power source from a
backplane with an ATX Connector.
CPU_FAN1 CPU Fan Power 4-pin header CPU fan power cable connector
3.2 Internal Peripheral Connectors
Internal peripheral connectors are found on the CPU card and are only accessible when
the CPU board is outside of the chassis. This section has complete descriptions of all the
internal, peripheral connectors on the 3301690 CPU board.

3.2.1 FDD Connector

CN Label: FDD1
CN Type: 2x17 pin header
CN Location: See Figure 3-2
CN Pinouts: SeeTable 3-1
The 3301690 is shipped with a 34-pin daisy-chain drive connector cable. This cable can
be connected to the FDD connector.
PIN DESCRIPTION PIN DESCRIPTION
1 GND 2 REDUCE WRITE
3 GND 4 N/C
5 N/C 6 N/C
7 GND 8 INDEX#
9 GND 10 MOTOR ENABLE A#
11 GND 12 DRIVE SELECT B#
13 GND 14 DRIVE SELECT A#
15 GND 16 MOTOR ENABLE B#
17 GND 18 DIRECTION#
19 GND 20 STEP#
32