Motherboard Manual
18
COM: Serial Port Header
The motherboard has a serial port header for connecting RS-232 Port.
Pin Assignment
1 Carrier
detect
2 Received
data
3 Transmitted
data
4 Data
terminal
ready
5 Signal
ground
6
Data set ready
7
Request to send
8 Clear
to
send
9 Ring
indicator
10 NC
J_PRINT1: Printer Port Header
This header allows user to connect a printer to the PC.
Pin Assignment Pin Assignment
1 -Strobe 14 Ground
2 -ALF 15
Data
6
3 Data
0 16 Ground
4 -Error 17 Data
7
5 Data
1 18 Ground
6 -Init 19
-ACK
7 Data
2 20 Ground
8 -Scltin 21 Busy
9 Data
3 22 Ground
10 Ground 23 PE
11 Data
4 24 Ground
12 Ground 25 SCLT
13 Data
5 26 Key
