Asus P3P-1394 User Manual page 38

3. HARDWARE SETUP
25) Serial Port Header (10-pin COM2)
The optional IEEE-1394/COM2 serial cable connector set can be used to add an
additional serial port for a second serial device. Connect the IEEE-1394 cables
from the 1394 CON board to the two IEEE-1394 headers (1394HEAD2/
1394HEAD3), the serial cable from the bracket to the COM2 header, and then
mount the bracket to the chassis on a free expansion slot.
P3B-1394
P3B-1394 Serial COM2 Header
NOTE: To use COM2C, you must have an IEEE-1394 device connected to
CON1, i.e. HEAD1 on the 1394 CON board must be used see 14) IEEE-1394
Headers.
26) Digital Audio Interface Header (3-pin SPDIFOUT)
This header is the digital link between the motherboard and your devices, such
as CD player, sampler, or DAT recorder. It allows the digital transmission of
audio data in SPDIF (Sony/Philips Digital Interface) format.
P3B-1394
P3B-1394 Audio Digital Interface Connector
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ASUS P3B-1394 User's Manual
CON1
COM2
CON2
1
COM2C
SPDIFOUT
HEAD1
HEAD2
COM2