20
Chapter 2 Installation Instructions
NF4K8AB Series User Manual
S/PDIF Out Connector: SPDIF_OUT
The S/PDIF out connector is capable of provid-
ing digital audio to external speakers or com-
pressed AC3 data to an external Dolby digital
decoder.
Note:
The empty pin of SPDIF cable should be
aligned to empty pin of SPDIF out connector.
SPDIF_OUT
5V
SPDIF-OUT
GND
EMPTY
1
1394 Connector: F_1394 (optional)
The 1394 expansion cable can be connected to
either the front (provided that the front panel of
your chassis is equipped with the appropriate
interface) or the rear panel of the chassis.
TPA-
F_1394
TPB-
GND
GND
+12V
TPB+
GND
TPA+
+12v
10
9
2
1
Chassis Intruder Connector: INTRUDER
The connector connects to the chassis security
switch on the case. The system can detect the
chassis intrusion through the status of this
connector. If the connector has been closed once,
the system will send a message. To utilize this
function, set “Intruder Detection” to “Enabled” in
the “Power Management Setup” section of the
CMOS Setup. Save and exit, then boot the oper-
ating system once to make sure this function takes
effect.
INTRUDER
1
2
INTRUDERJ
GND
