Foxconn NF4K8AC-RS - Manual (Page 26)

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Chapter 2 Installation Instructions
S/PDIF Out Connector: SPDIF_O1
The S/PDIF out connector is capable of providing
digital audio to external speaker or compressed
AC3 data to an external Dolby digital decoder.
COM2 Connector: COM2 (optional)
This connector accommodates a second serial port
using an optional serial port bracket. Connect the
bracket cable to this connector, then install the
bracket into a slot opening at the back of the system
chassis.
The connector connects to the chassis security
switch on the case. The system can detect the chas-
sis 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
the “Intruder# Detection” in the “Power Management
Setup” section of the CMOS Setup.Save and exit,
then boot the operating system once to make sure
this function takes effect.
Chassis Intruder Connector: INTRUDER (optional)
SPDIF OUT
3.3V
GND
SPDIF_O1
COM2
RLSD
SOUT
GND
RTS
RI
Empty
CTS
DSR
DTR
SIN
INTRUDERJ
GND
INTRUDER
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.
F_1394
2 1
GND
TPB-
+12V
GND
TPA-
10 9
TPB+
TPA+
+12V
GND