17
Installing the Motherboard
COM: Onboard serial port header
Connect a serial port extension bracket to this header to add a serial port to your
system.
1
DCDB
Data Carrier Detect
2
SINB
Serial Input
3
SOUTB
UART B Serial Output
4
DTRB
UART B Data Terminal Ready
5
GND
Ground
6
DSRB
Data Set Ready
7
RTSB
RART B Request to Send
8
CTSB
Clear to Send
9
RI
Ring Indicator
10
Key
No pin
Pin
Signal Name Function
LPT: Onboard parallel port Header
This is a header that can be used to connect to the printer, scanner or other devices.
1
STROBE
14
AFD
2
PD0
15
ERROR
3
PD1
16
INIT
4
PD2
17
SLCT
5
PD3
18
Ground
6
PD4
19
Ground
7
PD5
20
Ground
8
PD6
21
Ground
9
PD7
22
Ground
10
ACK
23
Ground
Pin
Signal Name Pin
Signal Name
11
BUSK
24
Ground
12
PE
25
Ground
13
SLCT
26
Key
SPDIFO: SPDIF out header
This is an optional header that provides an S/PDIF (Sony/Philips Digital Interface)
output to digital multimedia device through optical fiber or coaxial connector.
2
+5VA
5V analog Power
3
Key No pin
4
GND
Ground
1
SPDIF
SPDIF digital output
Pin
Signal Name Function